Word: alga
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Dates: during 1930-1939
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Successful attempts to photograph the eye in color were made in 1927-28 by Dr. Lawrence Redway of New York. The machine in use at the present time was built by Carl Zeiss in Germany on Dr. Redway's design. A special camera that takes a 4 1/2s6cm. Alga color plate stands on a vertical arm. It is franked by two light sources and in front of it is a chin rest for the subject. The lens is an F: 4.5. The two main modifications that have been made from the original plans are the substitution of incandescent light...
...source of U. S. agar is a dark red alga familiar along the beaches of southern California. The alga grows generally in turbulent waters, must be picked by hand. Engineers are at present at work on a mowing machine which will stand rough seas, make production cheaper. Often the alga grows in water 60 ft. deep where only experienced divers can gather it. The factory has to pay $180 per ton to these seagoing harvest hands...