In Fig. is given a diagram of the best of these mercury pumps, the one devised by Sprengel. The supply of mercury is contained in the reservoir on the left. It flows over into the bulb B, where it falls in drop Mehr
Public domain scan of print / book page depicting birds, ornithology, free to use, no copyright restrictions image - Picryl description
Portrait of Alexander Hamilton. Student's Reference Book, Chicago, F. E. Compton and Company 1914
Public domain photograph related to the history of Russia, free to use, no copyright restrictions image - Picryl description
Student's Reference Book, Chicago, F. E. Compton and Company 1914
Alexandre Dumas Fils Français : Alexandre Dumas Fils Student's Reference Book, Chicago, F. E. Compton and Company 1914
Alexandre Dumas Français : Alexandre Dumas Student's Reference Book, Chicago, F. E. Compton and Company 1914
Alfred Tennyson Français : Alfred Tennyson Student's Reference Book, Chicago, F. E. Compton and Company 1914
Alligator eggs and young alligators just hatched
Almond Student's Reference Book, Chicago, F. E. Compton and Company 1914
Ambrose Everett Burnside Français : Ambrose Everett Burnside Student's Reference Book, Chicago, F. E. Compton and Company 1914
Amentum Student's Reference Book, Chicago, F. E. Compton and Company 1914
Amœboid Cells Student's Reference Book, Chicago, F. E. Compton and Company 1914
Anemometer Student's Reference Book, Chicago, F. E. Compton and Company 1914
Anne Student's Reference Book, Chicago, F. E. Compton and Company 1914
Anteater Student's Reference Book, Chicago, F. E. Compton and Company 1914
Section through Antheridium of Liverwort Student's Reference Book, Chicago, F. E. Compton and Company 1914
Anthoceros Student's Reference Book, Chicago, F. E. Compton and Company 1914
Ants Student's Reference Book, Chicago, F. E. Compton and Company 1914
Appian Way
Student's Reference Book, Chicago, F. E. Compton and Company 1914 Public domain photograph of a priest, clergy, bishop, portrait, free to use, no copyright restrictions image - Picryl description
Archegonium of Moss Student's Reference Book, Chicago, F. E. Compton and Company 1914
Armadillo
Art armor: Roman Cuirass left, Greek armor, right. Student's Reference Book, Chicago, F. E. Compton and Company 1914
Roman Cuirass armor Student's Reference Book, Chicago, F. E. Compton and Company 1914
Arthur James Balfour Student's Reference Book, Chicago, F. E. Compton and Company 1914
Most artificial ice is made by what is called the compressor system. It is called the compressor system because the ammonia with which the freezing is done is first compressed by means of powerful steam pumps. Mehr
After the water leaves the condenser it is still warm, so it is made to pass through another series of parallel pipes. Over these pipes a spray of cold water is kept playing, which still further cools this dis Mehr
After the cans have been lowered into the tank they are covered with wooden slabs that fit down into them. The cans are allowed to remain in the brine until the distilled water becomes a solid block of ice. Th Mehr
This man is filling the cans with distilled water. It is in these cans the ice is made. On the bottom of the tube you see held in its place in the can with braces is a valve, opening upward. When this valve is Mehr
Distilled water is run through several kinds of filters. In this illustration the two large cylinders you see in the rear are charcoal filters. After the water has passed through these cylinders it is pumped t Mehr
After the ammonia has been condensed to a liquid state. It passes into a great cylinder called an evaporator. Here it begins to expand again back to a gas and passes into parallel pipes like those you have jus Mehr
In making artificial ice the first step is to get pure water. The water is boiled and then allowed to stand so that the impurities may settle. After this sediment has settled the water is drawn off and distill Mehr
A map of Asia Student's Reference Book, Chicago, F. E. Compton and Company 1914
Asiatic types Student's Reference Book, Chicago, F. E. Compton and Company 1914
Athens Student's Reference Book, Chicago, F. E. Compton and Company 1914
Auckland, New Zealand
AUXANOMETER an apparatus for measuring increase or rate of growth in plants.
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Azalea Public domain scan of drawing, botanical illustration, free to use, no copyright restrictions image - Picryl description
Badger Student's Reference Book, Chicago, F. E. Compton and Company 1914
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MONTENEGRIN GENERAL WATCHING BATTLE
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Baltimore-Washington Waterways Student's Reference Book, Chicago, F. E. Compton and Company 1914
BARON NORDENSKJÖLD Student's Reference Book, Chicago, F. E. Compton and Company 1914
Drawing/wood engraving of an electric battery composed of four zinc and copper liquid cells arranged in series. That could be a truncated plus sign over on the far right.
When the workers go out into the fields for pollen to feed the babies, they carry along "market baskets". These baskets, as you see in this picture, are on the outside of each pair of hind legs. Both body and l Mehr
Student's Reference Book, Chicago, F. E. Compton and Company 1914 Public domain photograph of burial, grave, funeral, free to use, no copyright restrictions image - Picryl description
Mouthpiece of an early telephone. Student's Reference Book, Chicago, F. E. Compton and Company 1914
Speaker of Bell's telephone design. Student's Reference Book, Chicago, F. E. Compton and Company 1914
Bell's telephone. Student's Reference Book, Chicago, F. E. Compton and Company 1914
Benedict Arnold Student's Reference Book, Chicago, F. E. Compton and Company 1914
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BICYCLE Public domain photograph of bicycle, bicyclist, free to use, no copyright restrictions image - Picryl description