Illustrated plate depicting crustacea, bryozoa, and spongidæ, minute animals and sponges living in water. Figures 1 through 3 depict crustacea magnified at 25 (Figures 1 and 2) and 2 (Figure 3) diameters respectively.…

Illustrated plate depicting rotifera, microscopic multi-celled organisms, and crustacea, arthropods with jointed appendages, living in water. Figures 1 through 4 depict rotifera magnified at 150 (Figures 2 and 3) and…

Illustrated plate depicting rotifera, microscopic multi-celled organisms living in water. While microscopic in size, rotifera have digestive and vascular systems and are commonly classified according to three features:…

Illustrated plate depicting various forms of protozoa, microscopic one-celled organisms, and rotifera, microscopic multi-celled organisms, living in water. Figures 1 and 2 depict protozoa magnified at 500 diameters. The…

Illustrated plate depicting miscellaneous forms of microscopic and minute organisms living in water.

Illustrated plate depicting various forms of protozoa, microscopic one-celled organisms living in water. The magnification of the organisms depicted in Figures 1, 6, 7, 8, and 9 is 500 diameters. The magnification of…

Illustrated plate depicting various forms of protozoa, microscopic one-celled organisms living in water. The magnification of the organisms depicted in Figures 1, 2, 3, 5, 7, and 9 is 500 diameters. Figures 6, 8, 10,…

Illustrated plate depicting various forms of protozoa, microscopic one-celled organisms living in water. The magnification of the organisms depicted in Figures 1 through 11 is 500 diameters. Figure 12 is magnified at…

Illustrated plate depicting various forms of fungi and protozoa, microscopic plant and animal organisms living in water. Figures 1 through 3 depict fungi and Figures 4 through 10 depict protozoa. All illustrations are…

Illustrated plate depicting various forms of chlorophyceæ (green algae) and fungi, microscopic plant organisms living in water. Figures 1 through 3 depict chlorophyceæ magnified at 125 diameters. Figures 4 through 8…

Illustrated plate depicting various forms of chlorophyceæ (green algae), microscopic plant organisms living in water. The magnification of the organisms depicted on the plate is 250 diameters.

Illustrated plate depicting various forms of chlorophyceæ (green algae), microscopic plant organisms living in water. The magnification of the organisms depicted on the plate varies from 100 to 500 diameters.

Illustrated plate depicting various forms of chlorophyceæ (green algae), microscopic plant organisms living in water. The magnification of the organisms depicted on the plate is 500 diameters, except for Figure 9, which…

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 are…

Illustrated plate depicting various forms of chlorophyceæ (green algae), microscopic plant organisms living in water. The magnification of the organisms depicted on the plate varies from 75 to 500 diameters.

Illustrated plate depicting various forms of schizophyceæ, microscopic plant organisms living in water. Figures 1 through 4 are classified as schzomycetes and figures 5 through 14 are classified as cyanophyceæ. The…

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.

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.

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.

Illustrated plate depicting sediment (chiefly algae) from tap water collected on cotton disks in Cambridge, Massachusetts during the autumn of 1913. Per the author, the plate is intended to illustrate the variations in…

B 181. Automatic, for gas heating, coal or wood firing.
B 183. Fully automatic, with copper interior and steam heating.

B 185. Combination water distillation unit with drying cabinet and sand bath for gas heating.

Also pictured are evaporating flask and dishes made of glass and metal.

B 4919. Water sampling apparatus, with bottles and tube for chemical, gas, and bacteriological analysis.
B 4921. For removing river or seawater.
B 4922. Flow-through water sampler suitable for all depths.
B 4923. Winch…

Postcard of the pipe track in Kinlochleven, Scotland sent to George Cyril Bailey (1890-1972). The pipe track was created to create power for aluminum manufacturing by the British Aluminium Company. The author writes…

Postcard with front view of the Dearborn Drug and Chemical Works hospitality suite located at Young's Million Dollar Pier in Atlantic City, New Jersey. The individuals visible in the photograph are unidentified.…