De Bakey knitted arterial graft of Dacron - dd1abcad21a8fa85d05a69b6c...
Hollow 8 mm tube of crimped, flexible Dacron (synthetic polyester fiber), off-white in color, and pink orange product label housed in original sealed plastic bag. Typically in the shape of a tube, Dacron grafts... Mehr
Der Bildungstrieb der Stoffe - e58aa65919b905637994edcb0bef702e (page...
Early examples of paper chromatography from German chemist Friedlieb Ferdinand Runge, who is considered to be the originator of the analytic technique. Runge investigated the color reactions of various chemical... Mehr
Des couleurs et de leurs applications aux arts industriels à l'aide de...
Michel Eugène Chevreul’s Des couleurs presents the French chemist’s color classification system distinguishing 14,400 hues and tones. The book’s plates, illustrating various tonal scales and color wheels, were ... Mehr
Down the line of furnaces in open hearth mill, charging a furnace with...
View of a line of furnaces in an open hearth mill at an unknown manufacturing plant. During the conversion of iron into steel, raw materials such as molten iron are "charged" or deposited into the interior of a... Mehr
Dr. D.C. Bardwell using an apparatus for experimenting with radon - 5...
General view of Dr. D.C. Bardwell using an apparatus to experiment with the chemical effects of radon at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. The F... Mehr
Dr. M.F. Fogler with apparatus for dissociation of nitric acid - f891...
General view of Dr. M.F. Fogler demonstrating an apparatus used for the dissociation of nitric acid at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. The Fix... Mehr
Drawbridge - 27a2e2af6920f2f01e7863f1f5c13ce8
A soldier ascends a drawbridge supported by ropes hanging from supporting beams.
Edge Moor Iron Company Boilers - 1eeedf62c2e57adca14fcc723cb3e763 (pa...
Volume presents and advertises the Edge Moor Iron Company's Water Tube Boiler apparatus, the company's principal product. Thoroughly illustrated with black and white photographic and intaglio prints depicting t... Mehr
Edge Moor Iron Company Boilers - 1eeedf62c2e57adca14fcc723cb3e763 (pa...
Volume presents and advertises the Edge Moor Iron Company's Water Tube Boiler apparatus, the company's principal product. Thoroughly illustrated with black and white photographic and intaglio prints depicting t... Mehr
Edge Moor Iron Company Boilers - 1eeedf62c2e57adca14fcc723cb3e763 (pa...
Volume presents and advertises the Edge Moor Iron Company's Water Tube Boiler apparatus, the company's principal product. Thoroughly illustrated with black and white photographic and intaglio prints depicting t... Mehr
Edward Newmans clearing extractor tank at Hercules Brunswick plant - ...
General view of employee Edward Newmans clearing spent wood chips from an extractor tank at the Hercules Powder Company plant in Brunswick, Georgia. One of two Hercules plants specializing in naval stores, the ... Mehr
Elémens de Pyrotechnie - 1ce678fe3cc9060f11d4fd6769f848e1 (page 12)
Written originally as a technical manual, this volume provides an historical account of the art and science of fireworks, with sections on materials, the manufacture of unit fireworks and display pieces, aquati... Mehr
Encyclopædia of Chemistry, Theoretical, Practical, and Analytical, as ...
Encyclopedia of technical chemistry. The work exists in two volumes; the first covers topics from Acetic Acid to Gas, and the second begins with Glass and ends with Zinc. Digitized content includes a limited se... Mehr
Experimental blast furnace plant during Tennessee Valley Authority ope...
Assorted views of the Fixed Nitrogen Research Laboratory's experimental blast furnace plant during a Tennessee Valley Authority (T.V.A.) operation. The Fixed Nitrogen Research Laboratory (F.N.R.L.) was establis... Mehr
Experimental Science - Elementary, Practical and Experimental Physics ...
Fully and elaborately illustrated publication concerned with introductory-level physics. As the author writes in his preface, "the design of this work is to afford to the student, the artisan, the mechanic, and... Mehr
Explosives for quarry blasting - practical information relating to the...
Catalog containing various quarry blasting explosives and equipment manufactured and sold by the E. I. Du Pont De Nemours & Company. Provides a guide for selecting the proper explosive for quarrying work, detai... Mehr
Exterior view of the Fixed Nitrogen Research Laboratory - 917baa7c1d8...
Two views of the exterior of the Fixed Nitrogen Research Laboratory facilities located at American University near Washington, D.C. The Fixed Nitrogen Research Laboratory (F.N.R.L.) was established at American ... Mehr
Faculty and students at the physical chemistry institute at Leipzig Un...
Group photograph of the students and faculty of the physical chemistry institute at Leipzig university. In the middle of the group sits Wilhelm Ostwald (1853-1932) and to his right, Georg Bredig (1868-1944). Th... Mehr
Figure 14. Impregnating Machine (Gas mantle manufacture) - 8890f441d9...
Figure 14 from the 1915 volume, The Rare Earth Industry depicting a machine (1/10 actual size) for saturating cotton and ramie webs with a solution of rare earth metals during the manufacture of gas mantles. Th... Mehr
Fig. 7- Edge of bronchus showing extent of inflammatory reaction. Fig....
Preliminary studies in intratracheal therapy.
First Day Cover commemorating the "Science of Chemistry" - 5da97cfad0...
First day cover created by Artmaster includes cachet depicting a 3D image of a nonexistent molecule. Stamp depicts chemical glassware. Envelope is signed by Herman S. Bloch, the inventor of the catalytic converter.
Fly Ded Sprayer - 30519090d5860f6b933cafd26427e663
Hand sprayer with wooden hand pump and metal canister labeled "FlyDed" in white text with blue outline on bright orange background. Green glass jar attached with metal screw cap at front end of sprayer.
Formaldehyde Gas as a Germicidal and Disinfecting Agent as Employed wi...
A brochure about the value of using formaldehyde gas for disinfection measures created by a company that sold formaldehyde regenerators, the instrument used to produce and distribute formaldehyde gas. Includes ... Mehr
Fred W. Skirrow and Henry L. Heathcote mixing a solution - 912bc2d5d5...
Black and white photograph of chemists, Frederick William Skirrow (1876-) at left and Henry L. Heathcote on the right, mixing a solution in a University of Leipzig laboratory.
GC-4 Gas Chromatograph - ebf05ab6abd0796bd6b547901ce828fa (page 5)
Beckman Instruments entered the gas chromatograph business in 1956 with the acquisition of the successful Watts Manufacturing Company. Later that year, Beckman Instruments produced its first gas chromatograph, ... Mehr
GC-4 Gas Chromatograph - ebf05ab6abd0796bd6b547901ce828fa (page 79)
Beckman Instruments entered the gas chromatograph business in 1956 with the acquisition of the successful Watts Manufacturing Company. Later that year, Beckman Instruments produced its first gas chromatograph, ... Mehr
Gilbert No. 1 Chemistry Outfit - 5f133f30347ca2b3e09c86204d7c4e4d
Chemistry sets reached their heyday in the 1950s, but production of them began in the United States during World War I. Playing with a toy chemistry set inspired many a boy to become a chemist, and not until th... Mehr
Handwritten letter by Giovanni Antonio Giobert - 7c097dfa5ba15090c84a...
Letter in French from Giovanni Antonio Giobert (1761-1834), an Italian chemist and mineralogist after whom the mineral giobertite has been named, to Count Chanteloup. Dated August 16, 1812, the letter concerns ... Mehr
Hearth and crucible of No. 2 experimental blast furnace - d9b25ebc3f1...
Four views of the hearth and crucible of the No. 2 experimental blast furnace at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. The photographs show the hear... Mehr
High-pressure pump - eed12d0afb3a00bf006fe6cea4a36d60
General view of a high-pressure pump used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. The Fixed Nitrogen Research Laboratory (F.N.R.L.) was established... Mehr
History of the Manufacture of Explosives for the World War, 1917-1918 ...
Digitized in entirety, this illustrated work contains photographs and histories of companies that produced munitions for use in World War One. Includes the E. I. du Pont de Nemours and Company, Pennsylvania Tro... Mehr
History of the Manufacture of Explosives for the World War, 1917-1918 ...
Digitized in entirety, this illustrated work contains photographs and histories of companies that produced munitions for use in World War One. Includes the E. I. du Pont de Nemours and Company, Pennsylvania Tro... Mehr
History of the Manufacture of Explosives for the World War, 1917-1918 ...
Digitized in entirety, this illustrated work contains photographs and histories of companies that produced munitions for use in World War One. Includes the E. I. du Pont de Nemours and Company, Pennsylvania Tro... Mehr
Hooker Electrochemical Company after Twenty-Five Years, Manufacturers ...
Publication providing a thorough corporate history of the Hooker Electrochemical Company, an American chemical company that produced chloralkali products from 1903 until 1968 when it was acquired by Occidental ... Mehr
How To Control Dust - 56b097a9af29afc5f577d1f163b0342e (page 1)
Promotional brochure used to advertise Dowflake Calcium Chloride, a product of the Dow Chemical Company marketed for use to control dust on unpaved roads and parking lots. The brochure details the nuisance of d... Mehr
How's Your House's Hat? - 4a4da0bda37e494684aca54ab6e17260 (page 6)
Booklet corresponding to a radio broadcast program created by the National Paint, Varnish, and Lacquer Association. The booklet is themed on roof maintenance. Describes a number of techniques for preserving one... Mehr
Indoor soil track at Fertilizer Machinery Laboratory - c8c475da3f655f...
General view of the indoor soil track used in the U.S. Department of Agriculture's Fertilizer Machinery Laboratory located at the Arlington Experimental Farm in Rosslyn [Arlington], Virginia. Measuring 9 feet w... Mehr
Instruction Manual, Model DK-1 Spectrophotometer - 6f54bf5fe6acb73757...
The Beckman DK Spectrophotometer was an enhancement of the DU, which expanded the instrument’s range of into near-infrared. This was accomplished by chemist Wilbur I. Kaye, who began his work on science behind ... Mehr
Instructions, Preparing Problems for Solution on an Analog Computer - ...
George A. Bekey spent several years with Beckman Instruments and TRW Systems before joining the faculty of the University of Southern California, where his work as a roboticist focused on ethics, robot-human in... Mehr
Isotopes - 0b84d00c832002ce21e17828f300cf4b (page 177)
Digitized in entirety, this work on isotopes covers topics including radioactive isotopes, positive rays, neon, the mass spectrograph, analysis of the elements, electrical theory of matter, atomic numbers, spec... Mehr
Isotopes from Oak Ridge National Laboratory - e0c6130cefc5b46cc75a4e2...
This booklet was created for the general public providing basic statistics on Oak Ridge National Laboratory with descriptions of radioisotopes and how they are produced. There is a section on the Fission Produc... Mehr
J.W. Colton's Choice Cooking Recipes, Preparations and Calendar for 18...
This cookbook produced by J.W. Colton was possibly distributed at the 1876 Centennial Exhibition given it is entitled "Centennial Cook Book" and features an illustration of the medal awarded to J.W. Colton for ... Mehr
Krustallos, a story of quartz - 6616493a997ce86ed9db7890a0f40523 (pag...
Illustrated publication or brochure discussing the mineral, Quartz. Divided into three sections: "Its Romance in the Past", "Its Realities in the Present", and "Its Promise for the Future", the publication desc... Mehr
L'air - d5d298a3045cf9c56ecebffe93b38e87 (page 22)
A second edition French volume of L'Air containing 95 engravings. The volume is an informational overview of the Earth's atmosphere: the materiality of air, the formation of rain and thunderstorms, winds, the d... Mehr
Lablache Face Powder - 145f11cb1f444b8c2650e8aa4d4b07bc (page 1)
An empty circular white cardboard box with gold rims that held a face powder. The paper label is decorated with a winged cherub holding aloft a Lablache Face Powder banner with the words "a harmless toilet powd... Mehr
La Consultation Appréhendée - 73cc384ee8fc3ed0553250bc27479959
This print, engraved by Jean Jacques Le Veau after a painting by Marie-Marc-Antoine Bilcoq, shows a bearded alchemist examining a flask in the warm light of an unseen window. In a humble chamber behind a wooden... Mehr
Laboratory Wood Work - Physics, Biology, Chemistry, Physiography, Draw...
An early 20th-century catalog of laboratory furniture equipment manufactured and sold by Leonard Peterson & Co. The fully illustrated catalog primarily advertises custom-built benches and cabinetry for science ... Mehr
Laboratory Wood Work - Physics, Biology, Chemistry, Physiography, Draw...
An early 20th-century catalog of laboratory furniture equipment manufactured and sold by Leonard Peterson & Co. The fully illustrated catalog primarily advertises custom-built benches and cabinetry for science ... Mehr
Le diverse et artificiose machine del capitano Agostino Ramelli - f72...
Le diverse et artificiose machine belongs to a new genre that emerged in the late 16th century, the "theatre of machines," which offered original mechanical solutions to the problems of everyday life. Ramelli's... Mehr
Le diverse et artificiose machine del capitano Agostino Ramelli - f72...
Le diverse et artificiose machine belongs to a new genre that emerged in the late 16th century, the "theatre of machines," which offered original mechanical solutions to the problems of everyday life. Ramelli's... Mehr
Le diverse et artificiose machine del capitano Agostino Ramelli - f72...
Le diverse et artificiose machine belongs to a new genre that emerged in the late 16th century, the "theatre of machines," which offered original mechanical solutions to the problems of everyday life. Ramelli's... Mehr
Le diverse et artificiose machine del capitano Agostino Ramelli - f72...
Le diverse et artificiose machine belongs to a new genre that emerged in the late 16th century, the "theatre of machines," which offered original mechanical solutions to the problems of everyday life. Ramelli's... Mehr
Le diverse et artificiose machine del capitano Agostino Ramelli - f72...
Le diverse et artificiose machine belongs to a new genre that emerged in the late 16th century, the "theatre of machines," which offered original mechanical solutions to the problems of everyday life. Ramelli's... Mehr
Letter from Svante Arrhenius to Georg Bredig, January 1913 - 00b3c3d7...
Letter from Svante Arrhenius (1859-1927) to Georg Bredig (1868-1944) containing personal and professional updates. Arrhenius praises Bredig for his interest in physical chemistry, discusses Wilhelm Ostwald's (1... Mehr
Le diverse et artificiose machine del capitano Agostino Ramelli - f72...
Le diverse et artificiose machine belongs to a new genre that emerged in the late 16th century, the "theatre of machines," which offered original mechanical solutions to the problems of everyday life. Ramelli's... Mehr
Low Cost Weed and Grass Control with Du Pont "Telvar" W Weed Killer - ...
This pamphlet reviews how the use of "Telvar" W weed killer can be an effective pesticide for weed and grass control. Depicts various industrial landscapes where "Telvar" W has been sprayed including pipelines,... Mehr
Merlyn Smith molding a flange in Glass Fabrication department - 4da26...
General view of Merlyn Smith molding a flange on a six-inch pipe manufactured in the Dow Chemical Company's Glass Fabrication department. Founded in 1925, the department was responsible for the fabrication and ... Mehr
Miller's still for the distillation of alcohol - aa5580af4d825279559d...
Still patented by James Miller for the distillation of alcohol.
Model of a synthetic ammonia plant - 43698425d87469dfa52fb6d2d727b393
General view of a table-top model of a synthetic ammonia plant showing an assortment of plant machinery and apparatus. The model was created by the U.S. Department of Agriculture's Fixed Nitrogen Research Labor... Mehr
Monoplan R. Esnault-Pelterie - 6d351b73b4f702c9bd0b50b18852b774
Postcard featuring a hand-drawn illustrated depiction of a monoplane designed and flown by French aircraft designer and spaceflight theorist Robert Esnault-Pelterie (1881-1957). This postcard is part of a set o... Mehr
Morse Alphabet and Numbers - d7e2973c17896d3e53028108da5a7000
Text and table detailing the Morse code alphabet and numerals used to communicate via telegraph.
Monsanto Hall of Chemistry pamphlet - 14ec70746db59dba4138e8ddbd20210...
The cover of this chromolithograph pamphlet depicts the entrance of Monsanto's Hall of Chemistry exhibit which opened in Disneyland's Tomorrowland in July 1955. Foldout contains illustrations and text on how ch... Mehr
Motor Car & Coach Painting for Private, Commercial and Mass Output - ...
Second edition volume with chapters on the motor car painting process, a special chapter on "Painting with Nitrocellulose Products," and several chapters on motor painting material specifications. The volume in... Mehr
Motor Car & Coach Painting for Private, Commercial and Mass Output - ...
Second edition volume with chapters on the motor car painting process, a special chapter on "Painting with Nitrocellulose Products," and several chapters on motor painting material specifications. The volume in... Mehr
Mundus subterraneus - in XII libros digestus - 989600aa8c1f9e58bcb4bf...
A first edition work, with two volumes bound in one folio, by Athanasius Kircher (1602–1680), a German Jesuit scholar who published many extensive works on scientific, religious, and other subjects. Dubbed the ... Mehr
Mundus subterraneus - in XII libros digestus - 989600aa8c1f9e58bcb4bf...
A first edition work, with two volumes bound in one folio, by Athanasius Kircher (1602–1680), a German Jesuit scholar who published many extensive works on scientific, religious, and other subjects. Dubbed the ... Mehr
Mundus subterraneus - in XII libros digestus - 989600aa8c1f9e58bcb4bf...
A first edition work, with two volumes bound in one folio, by Athanasius Kircher (1602–1680), a German Jesuit scholar who published many extensive works on scientific, religious, and other subjects. Dubbed the ... Mehr
Museum Wormianum - 8d2b213f3984c3626b3e1998f7d44728 (page 39)
This work contains a detailed description of the natural history cabinet created by the Danish scientist Ole Worm. The text is divided into four books, the first three dealing with minerals, the plant and anima... Mehr
New Catechism of Electricity- A Practical Treatise - d1a18d0d30f5827c...
Addressed not to "the experimenter or to the toy-maker, nor to the scholar in school or college, but to those who have to deal with Electricity as a part of their life work," this volume seeks to provide an int... Mehr
Nylon Wear Test Underwear - f28a08b674bdc1b19321a141bfabf49d (page 3)
A pair of off-white underwear made of Nylon with elastic in the waist and around each leg hole.
Only nylon cord tires can give you utmost safety—surest protection aga...
Black and white print magazine advertisement for DuPont's nylon cord tires. Image shows a family of six seated in a car while driving through highway traffic, for "when you need tires that assure greatest dependability."
Opium masses - b8393fbeb1d1482cade6d8a36f00eed3
Printed illustration in color of two opium masses. Opium is made from the juice from the capsules of Papaver somniferum which is then hardened by evaporation. The top illustration, no. 18, is of Egyptian Opium ... Mehr
Ortho Ant & Roach Bomb - c8cb06115aa274379df931b36e892757 (page 1)
Ortho brand insecticide aerosol spray can with blue and white text on red, yellow, and white label with insect graphics. Round red cap.
Party Kitchen - 4440c1cc143f7aaddd116c09241a7c4f (page 1)
Booklet corresponding to a radio broadcast program created by the National Paint, Varnish, and Lacquer Association. The booklet suggests that the most successful kitchen is one built around a definitive theme. ... Mehr
Periodic table in style of spiral with sixteen radii - 53c4e4b9d0245d...
Graphic representation of the periodic table of chemical elements in the style of a spiral with sixteen radii. This table was originated by Russian chemist Flavīan Flavit︠s︡kīĭ in 1887 and and classified by Maz... Mehr
Periodic table in style of spiral with radii - c81e275fd52c5fae24eaa0...
Graphic representation of the periodic table of chemical elements in the style of a spiral with radii and interrupted short periods. This table was originated by Scottish chemist James Fowler Tocher (1864-1945)... Mehr
Physical Apparatus for Universities and Colleges Manufactured and Impo...
A catalog of laboratory instruments for the physical sciences made by the Central Scientific Company. Founded in 1900 in downtown Chicago, Central Scientific manufactured and distributed science teaching equipm... Mehr
Physical Apparatus for Universities and Colleges Manufactured and Impo...
A catalog of laboratory instruments for the physical sciences made by the Central Scientific Company. Founded in 1900 in downtown Chicago, Central Scientific manufactured and distributed science teaching equipm... Mehr
Pigment - Research - Paint - 43a8915455516bda5990d68fadbc9c75 (page 2...
A publication showcasing the laboratories, apparatus, machinery, and personnel of the New Jersey Zinc Company. Intended to present the company's research facilities in Palmerton, Pennsylvania used for zinc pigm... Mehr
Pigment - Research - Paint - 43a8915455516bda5990d68fadbc9c75 (page 6...
A publication showcasing the laboratories, apparatus, machinery, and personnel of the New Jersey Zinc Company. Intended to present the company's research facilities in Palmerton, Pennsylvania used for zinc pigm... Mehr
Plant-atlas to "My water-cure," - containing sixty nine pictorial repr...
The Plant-Atlas is a book about the herbal plants that can be used for health remedies. The publication of this book followed that of Sabastian Kneipp's My Water Cure, and is meant as a supplement to help the r... Mehr
Plant-atlas to "My water-cure," - containing sixty nine pictorial repr...
The Plant-Atlas is a book about the herbal plants that can be used for health remedies. The publication of this book followed that of Sabastian Kneipp's My Water Cure, and is meant as a supplement to help the r... Mehr
Plate 11- Sempervivum tectorum - b8559426efa6a1ec856cf3615e3afce6
Hand-colored lithograph of common houseleek, Sempervivum tectorum. Class Dodecandria, order Dodecagynia.
Plate 141- Bridge for crossing a city or fortress moat and scaling its...
Mechanics: hand crank; worm and worm gear; lantern and rack; roller guides.
Plate 141- Bridge for crossing a city or fortress moat and scaling its...
Mechanics: hand crank; worm and worm gear; lantern and rack; roller guides.
Plate 151- Bridge for crossing a very deep river - ffde4e3e00c4bf7e38...
Bridge composed of boats, positioned with oars, anchored in place, and connected by unfolding doubled-over bridge sections. See Plate 150 for the transportation of components of bridge by horse. Monogrammed "JG... Mehr
Plate 152- Bridge for crossing a city or fortress water moat - 09996c...
Bridge composed of broad-bottomed boats, paddled via an internal crank, positioned with a rudder, and fastened together. Monogrammed "JG" on rock at lower right. Mechanics: horizontal crankshaft.
Plate 5- Ilex aquifolium - a572939b98b62b709bae21b431422170
Hand-colored lithograph of common holly, Ilex aquifolium. Class Tetrandria, order Tetragynia.
Plate 5- Elements - eccc693a6de4f4c3b4ef858c715e6457
This plate exhibits various symbols devised to represent simple and compound elements; they are nearly the same as in plate 4, only extended and corrected.
Plate E- Rocket and cracker molds; instruments for charging rocket cas...
Fig. 22: Diagram to determine the dimensions of large rocket molds from smaller ones. Fig. 23: Rocket mold. Fig. 24: Mold for cracker fireworks. Fig. 25: Wooden driver to make paper and canvas rocket cases. Fig... Mehr
Plate II- Artist study of male heads and female head-torso - 9ee7c824...
Engraved artist study of male heads as well as a female head and torso. The most popular of William Salmon's numerous books, the title page refers to 25 plates within whereas other copies are also missing plate... Mehr
Plate I- Life history of the simplest organism, a Moneron (Protomyxa a...
Frontispiece illustration is titled "Lebensgeschichte eines einfachtsten Organismus, eines Moneres (Protomyxa aurantiaca)" or "Life history of the simplest organism, a Moneron (Protomyxa aurantiaca)." Sixteen f... Mehr
Plate II- Diatomaceæ - b8a0e6149bbc4f6375a0889ad4013a42
Illustrated plate depicting various forms of diatoms or diatomaceæ, microscopic plant organisms living in water. The magnification of the organisms depicted on the plate is 500 diameters.
Plate I- The Modern Chemical Apparatus. No.1 - 8a848cb399712ee10033f1...
Hand-colored engraving by J. Pass after the drawing by Henry Lascelles for the section on "Chemistry." From Volume 4 of the Encyclopaedia Londinensis; or, Universal Dictionary of Arts, Sciences, and Literature,... Mehr
Plate III- The Modern Chemical Apparatus. No.3 - fdd739d6844040916301...
Hand-colored engraving by J. Pass after the drawing by Henry Lascelles for the section on "Chemistry." From Volume 4 of the Encyclopaedia Londinensis; or, Universal Dictionary of Arts, Sciences, and Literature,... Mehr
Plate V- Cyanophyceæ and Chlorophyceæ - 97dbfbac53a2c5866af3b77fcd692...
Illustrated plate depicting various forms of cyanophyceæ and chlorophyceæ (green algae), microscopic plant organisms living in water. Figures 1 through 9 are classified as cyanophyceæ and figures 10 through 12 ... Mehr