1122 



INDEX 



" Motor " areas, 918 

 Mountain sickness, 292 

 Movements, forced, 912 

 Mucin in bile, 358 



in saliva, 448 



Mucous glands, secretory changes in, 375 

 Miiller's experiment, 290 

 Muscarine, action of, on heart, 164, 197 

 Muscle, action of curara on, 784, 712 



action of nicotine on, 713 



anaerobic contraction of, 744 



arrangement for tracings, 785 



chemistry of, 792 



composition of, 741 



contraction, influence of load on, 72 1 



degeneration of, 777 



diffraction spectrum, 719 



direct excitability of, 712, 784 



direct stimulation of, 714 



efficiency of, 739 



elasticity of, 709 



extensibility of, 709 



fatigue of, 723 

 cause of, 725 

 seats of, 727 



formation of lactic acid in, 743 



gases of, 266 



general physiology of, 696 



heat -production in, 662 



" idio-muscular " contraction of, 



733 

 nerve preparation, 781 



fatigue of, 786 

 of eyes, extrinsic, 1023 

 oxygen consumption of, 267 

 permeability of, 747 

 physical properties of, 709 

 reaction of, 743, 793 

 receptive substances of, 713 

 respiration of, 265 

 smooth, contraction of, 719, 721, 



790 



wave of contraction in, 733 

 spindles, 777 

 stimulation, 711 

 structure of, 716 

 trough, 782 



Muscular contraction and lactic acid, 741 

 changes during, 718 

 chemical phenomena of, 741 

 CO 2 production in, 742 

 duration of, 719 

 graphic record of, 784 

 heat -production in, 736, 737 

 in absence of oxygen, 300 

 influence of fatigue, 786 

 of load on, 786 

 of mental fatigue on, 728 

 of previous stimulation on, 



723 



of temperature on, 723, 

 786 



Muscular contraction, influence of vera 



trine on, 728, 887 

 isotonic and isometric, 721 

 latent period of, 719, 788 

 mechanical phenomena, of, 719 

 O 2 composition in, 742 

 optical phenomena of, 716 

 physico-chemical conditions of, 



747 



rate of wave of, 733 

 relation between mechanical 



energy and heat -production. 



739 



relation of glycogen to, 745 



substances metabolized in, 745 



superposition of, 730 



theories of, 718 



time relations of, 721 



voluntary, 734 



work done in, 721 

 sensations, 1052 

 tissue, action of extracts of, 650 

 tone, 889 

 work and nitrogenous metabolism, 



599 



source of energy of, 600 

 Musical centres, 933 

 Myelencephalon, 822 

 Myelin sheath, fragmentation of, 770 

 Myelination of tracts at different times, 



927 



Myeloblasts, 22 

 Myograph, 192, 719 

 spring, 720, 788 

 Myohaematin, 741 

 Myosin, 793 

 Myosinogen,793 

 Myxcedema, 633 



Ne gative variation . S ee Action current 

 Nerve, carbon dioxide production in 



756 



chemical changes in, 756 

 chemistry of, 768 

 conductivity of, 764 



anaesthetics and, 787 

 degeneration of, 769 



phosphorus in, 771 

 endings, action of drugs on, 180 

 excitability of, 758 



and conductivity of, 760 

 fibres, medullated, 832 

 structures of, 823 

 heat -production in, 756 

 impulse, nature of, 755 

 velocity of, 767, 791 



temperature coefficient of, 



756 



muscle preparation, 781 

 pattern of, 773 

 polarization of, 802 

 propagated disturbance of, 755 



