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able accumulation action active animal arms associated become blood body brain breath breathlessness carbonic acid carried cause certain changes chest combustion complete condition consequently continued contraction cord deposits difficult diminished direction disturbances effects effort elements eliminated energetic energy excessive exercise exhaustion expenditure fact fatigue fencing fibres force functions give given greater gymnastic hand heart heat Hence horse important increase influence intensity kind lead legs less limbs longer lungs manner materials mechanical mental motor move movements muscles muscular necessary nerve nervous observed occurs organs overwork painful pass performed period persons phenomena physical play possible practice produced quantity quickly raise rapid remains render repose resistance respiration respiratory result running sensation short shoulders speed stiffness stimulus strength substances suffering tends tion tissues urine usually violent walking weight whole
Página i - Heredity." $1.50. 42. ANTS, BEES, AND WASPS. A Record of Observations of the Habits of the Social Hymenoptera. By Sir JOHN LUBBOCK, Bart., FR 8., DCL, LL.