INDEX 



1235 



Muscular contraction, physico-chemical 



conditions of, 773 

 rate of wave of, 759 

 relation between mechanical 

 energy and heat-production, 

 765 



relation of glycogeu to, 771 

 substances metabolized in, 771 

 superposition of, 756, 816 

 theories of, 744 

 time relations of, 747 

 voluntary, 760 

 work done in, 747 

 sensations, 1094 

 tissue, action of extracts of, 673 

 tone, 917, 938, 1000 

 work and nitrogenous metabolism, 



610 

 source of energy of, 611, 767, 



771 



Musical centres, 967 

 Myelencephalon, 850 

 Myelin sheath, fragmentation of, 796 

 Myelination of tracts at different times, 



961 



Myeloblasts, 22 

 Myocardiograph, 162, 203 

 Myograph, 195, 745, 812 



spring, 746, 815 

 Myohaematin, 767 

 Myosin, 820 

 Myosinogen, 820 

 Myxoedema, 648 



Negative variation. See Action current 

 Nerve, carbon dioxide production in, 



782 



chemical changes in, 782 

 chemistry of, 794 

 conductivity of, 790 



anaesthetics and, 814 

 degeneration of, 795 



phosphorus in, 797 

 endings, action of drugs on, 182 

 excitability of, 784 



and conductivity of, 786 

 fibres, medullated, 781, 860 



structure of, 781, 851 

 heat-production in, 782 

 impulse, nature of, 781 



velocity of, 793, 818 



temperature coefficient of, 



782 



muscle preparation, 808 

 pattern of, 799 

 polarization of, 829 

 propagated disturbance of, 781 

 regeneration of, 798 



autogenetic, 802 



chemiotaxis in, 800 

 stimulation of, 783 

 trunks, cooling of, 979 



Nerves, anastomosis of, 798, 976 

 classification of, 807 

 posterior roots, section of, 797, 964 

 preganglionic, 185, 865 

 specific energy of, 979 

 trophic, 805 

 Nerve-cells, growth in vitro, 802, 803, 856, 



857 



effect of anaemia on, 859 

 anaesthetics on, 859 

 division of axons on, 795, 859 

 fatigue on, 859, 983, 984 

 of Golgi's second type, 856 

 Nervi erigentes, 180, 332, 334 

 Nervous activity, chemistry of, 782, 795, 



991 

 Nervous system, autonomic, 1003 



development of, in different 



animals, 898 



tissue, action of extracts of, 673 

 Neural canal, 849 



groove, 849 

 Neuroblasts, 849, 858 

 Neuroglia, 86 1 

 Neurokeratin, 795 

 Neurons, 851 



growth of, 857 

 nutrition of, 858 

 scheme of lower motor, 855 

 varieties of, 855, 856 

 Nicotine, action of, on ganglion cells of 



heart, 166 



on skeletal muscle, 740 

 on sympathetic, 182, 1005 

 effect of, on nerve-cells, 182, 913 

 Night-blindness, 1060 

 Nissl substance, 851, 984 

 Nitrogen balance-sheet, 602 



necessary quantity of, in diet, 623, 



624, 625 

 total, estimation of, 521 



variation of, with protein in 



food, 720 

 Nitrogenous equilibrium, 602 



protein necessary for, 605 

 metabolism and muscular work, 



610 



Norleucin, 360 

 Normal solution, 479 

 Normoblasts, 21 

 Nuclease, 594 

 Nucleic acids, chemistry of, 593 



metabolism of, 592 

 Nucleo-proteins, i, 2, 47 

 digestion of, 417, 592 

 Nucleosides, synthesis of, 597 

 Nucleotidase, 594 

 Nucleotids, 593 

 Nucleus, 5 



globosus, 885 



importance of, for cell, 795 

 tecti, 885, 928 



