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according action acts already animal apparatus appears arrangement attached bird body carried cause changes Cloth contraction corresponds course curve cylinder descent described determine develop direction drum duration effect effort electric elevation employed excited experiments extent extremity fact feet fibre figure flight foot force forward function furnished gallop give given greater ground heat horizontal horse Illustrations impacts increase influence insect instant kind length less lever limbs living locomotion lower manner means measure mechanical ment method modified motion move movements muscle muscular nature necessary nerve notation observed obtained organism oscillations pace pass placed plane portion position present pressure produced raised rapidity re-actions registering instrument represented resistance rise seen shock short shows species speed strokes successive surface theory tion tracing transformation trot turn varies various vertical walking weight wing
Página i - and Principles. By FRANCIS WARNEB, MD, Assistant Physician, and Lecturer on Botany to the London Hospital, etc. With 51 Illustrations. $1.75. ANTHROPOID APES. By ROBERT HARTMANN, Professor In the University of Berlin. With 63 Illustrations. $1.75. 63. THE MAMMALIA IN THEIR RELATION TO PRIMEVAL TIMES. By OSCAR SCUMIDT.