. Biology; the story of living things. . /(/// "' \nturiil Histnry A deep-sea group of fish : left, Macrurid, and right, Brotulid. and the larvae of certain insects that are adapted to live in hot springs, the temperature of which is sufficient to coagulate the pro- toplasm of most organisms. Some animals, frogs for example, can survive a degree of freezing that would be fatal to others. Trees and woody shrubs can successfully withstand low temperatures that cause most of the less woody plants to succumb. The varying range of frost and heat to which plants of different sorts are sus- cept
. Biology; the story of living things. . /(/// "' \nturiil Histnry A deep-sea group of fish : left, Macrurid, and right, Brotulid. and the larvae of certain insects that are adapted to live in hot springs, the temperature of which is sufficient to coagulate the pro- toplasm of most organisms. Some animals, frogs for example, can survive a degree of freezing that would be fatal to others. Trees and woody shrubs can successfully withstand low temperatures that cause most of the less woody plants to succumb. The varying range of frost and heat to which plants of different sorts are sus- ceptible is common knowledge to every farmer. Adaptive devices, such as gem- mules of fresh-water sponges, the winter eggs of daphnids, and the statoblasts of certain bryozoans, carry these lowly animals through the freezing winter into another summer quite as effectively as the various coats and shells of seeds and nuts. Again, warm-bloodedness is an adaptation fitting birds and mammals to cope successfully Avith great and often sudden shifts in temperature on land, to which the cold-blooded inhabitants of water are not subjected. Pressure is another physical factor to which every organism, in order to live, must be adjusted. Most animals and plants living on the surface of the earth, beneath a uniform blanket of atmosphere, are not subjected to much differ- ence in pressure, but deep-sea fishes, with an additional weight of superimposed water, have quite American Museum of Histunj ^ ^ ; -i Oceanic angler fish, Linophryne. The a different problem to meet. This beard is probably luminous. particular form of adaptation. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hunter, George W. (George William), 1873-1948; Walter, Herbert Eugene, b. 1867; Hunter, George W. (George William), 1902-. New York, Cincin
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