The Bookshelf for boys and girls: Nature and Outdoor Life (1912)
University Society, New York · New York. : University Society · leaf 101
breath-ing-openings on the various segments of whichtheir bodies consist. Scientists call these open-ings spiracles. Hold a locust between your fin-gers and watch the breathing movements of the 296 SOME CURIOUS INSECTS AND THEIR HABITS body. Professor Packard says: There weresixty-five contractions… … THE BREATHING APPARATUS OF AN INSECT(SPIRACLE AND TRACHEA) Each spiracle is guarded by little projectingspines which form a latticework or grate to keepout dust, etc. After passing through the spiraclethe air is conducted to all parts of the body bytubes made by tiny spiral threads. This…
Children's literature · Children's encyclopedias and dictionaries · Literature · Encyclopedias and dictionaries
Internet Archive · BYU–Idaho · Public Domain Mark 1.0. Free to use for anything.
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