INDEX. 



281 



Lest time in muscle, Ilelmholtz, 43 

 Lucy, M. de, oil wings of birds, 222 

 Lungs, not seat of combustion, 23 



M. 



Marey's myograph, 32 



Matteucci on torpedo, 52 

 Mechanical work, estimation of, Gl 



forms of, 60 

 Mechanism of flight, reproduced, 



277 

 Modification of animals, 100 



of men, 101 

 Momentum, divided between gun 



and carriage, 110 

 Moreau on torpedo, 53 

 Motion, all force reduced to, 8 

 alternate in living motive 



powers, 66 



Motors, living, dynamic energy of, 68 

 Movements, see Tracings 



caused by muscles in 



insect's wing, 106 

 of snail, 105 

 of wing of birds, 226 



insects, 195, 



197 



Muschelbroeck on torpedo, 52 

 Muscles, absorption of, from disease, 

 96 



adaptation of, to function, 



95 



change of, by age, 99 



by experiment, 

 101 



fatty degeneration of, 97 



harmony between form and 



function in, 77 



homology of, 73 



in jaw of carnivorn, 90 

 in man and ape, 75 



large, slight contraction of, 



62 

 lateral dilatation of, 36 



long and short, 70 



mechanical force in, 39 

 pectoral in birds, 72, 211 



penniform, 70 



use of, acquired by habit, 



29 



Muscles, work of, 47 

 Muscular current, negative varia- 

 tion of, 50 

 contraction, tone heard 



in, 46 



force of birds, 213 

 of tissue, 64 

 shocks, 50, 51 

 system, variation in, 94 

 tissue, specific force of, 



64 

 wave, 35 



speed of, 38 

 Myograph, explanation of, 31 



N. 



Nerve, function of, 41 

 Nervous agent, speed of, 42 



Du Buis Reymond 

 on, 41 



centres command action 



without the influence of 

 the brain, 29 

 tetanus, 45 

 Notation of p.ices, man, 134 



horse, amble, 142 



- gallop, 165, 



16&,ctscq. 



trot, 144 



irregu- 

 lar, 156 



walk, 142, 



163 



synoptical table 



of, 145 



rule, 175 



O. 



Oscillation of body, 113 

 Oxidation of blood, 20 



P. 



Passades of birds, 220 

 i Peiia ud's flight instrument, 277 



