. A civic biology : presented in problems. Biology; Sanitation. 198 THE ECONOMIC [IMPORTANCE ()T ANIMALS USES OF ANIMALS Indirect Use as Food. Just as plants form the food of ani- mals, so some animals are food for others. Man may make use of such food directly or indirectly. Many mollusks, as the bar- nacle and mussel, an1 eaten by fishes. Other fish live upon tiny organisms, water fleas and other small ( rustaceans. These in turn feed upon still smaller animals, and we may go back and back until finally we come to the Protozoa and one-celled water plants as an ultimate source of food. Direct
. A civic biology : presented in problems. Biology; Sanitation. 198 THE ECONOMIC [IMPORTANCE ()T ANIMALS USES OF ANIMALS Indirect Use as Food. Just as plants form the food of ani- mals, so some animals are food for others. Man may make use of such food directly or indirectly. Many mollusks, as the bar- nacle and mussel, an1 eaten by fishes. Other fish live upon tiny organisms, water fleas and other small ( rustaceans. These in turn feed upon still smaller animals, and we may go back and back until finally we come to the Protozoa and one-celled water plants as an ultimate source of food. Direct Use as Food. Lower Forms. The forms of life lower than the Crustacea are of little use directly as food, although the Chinese are very fond of one of the Echinoderms, a holothurian. Crustacea as Food. - - Crustaceans, however, are of considerable value for food, the lobster fisheries in particular being of importance. The lobster is highly esteemed as food, and is rapidly disappearing from our coasts as the result of overfishing. Between twenty and thirty million are yearly taken on the North Atlantic coast. This means a value at present prices of about $15,000,000. Laws have been enacted in New York and other states against overfishing. Egg-carrying lobsters must be returned to the water; all smaller than six to nine inches in length (the law varies in different states) must be put back; other restrictions are placed upon the taking of the animals, in hope of saving the race from extinction. Some states now hatch and care for the young for a period of time ; the United States Bureau of Fisheries is also doing much good work, in the hope of restocking to some extent the now almost depleted North American lobster. This specimen, preserved at the U. S. Fish Commission at Woods Hole, was of unusual size and weighed over twenty Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration a
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