INDEX TO VOLUME II. 



Absolute muscular force, 141 



Accelerator urinae muscle, 449 

 Accommodation, 306 

 associated movements of, 311 

 astigmatic, 310 



dissociation of, from convergence, 312 

 influence of drugs on, 311 

 in old age, 314 

 mechanism of, 309 

 nervous mechanism of, 311 

 normal range of, 312 

 range of, in hypermetropia, •'ill 



in myopia, 314 

 relation of, to perception of distance, 356 

 voluntary character of, .'ill 

 Achromatic lenses, 316 

 Achromatism of the eye, 316 

 Acid salts of muscle, 168 

 Acidity of worked muscles, 168 

 Acids, action of, on nerves and muscles, 60 

 Acquired characters, inheritance of, 496 



variations, 500 

 Actinic rays of the luminiferous ether, 331 

 Action current, diphasic, 152 

 in the heart, 152 

 in the muscles, 150 

 in the nerves, 153, 183 

 Adam's apple, 425 



Adrenal extract, action of, on muscles, 138 

 Aerial perspective, 355 



Afferent impulses, effect of, on irritability of the 

 cut ral nervous system, 2:23 

 neurones of i he spinal cord, 203 

 paths in the cord traced electrically, 230 

 traced histologically, 229 

 traced physiologically, 229 

 After-birth, 481 



After-effect of retinal stimulation, 345 

 After-images, 346 

 After-loading of muscles, IH» 

 After-pressure, sensation of, 394 

 Agamogenesis, 139 



Age, changes in organization of the central 

 nervous system wit 1 1 , 28 I 

 influence of. on nerve-cells, 190 

 on visual accommodation, :!l 1 

 relation of brain-weights to. .'Tii 



of menstrual ion to, 159 

 specific gravity of the nervous system with 

 changes in, 2*4 

 Albinos, condition of the internal ear in, l<>7 

 Alcohol, action of, on conductivity of nerves. 

 93 



effect of, on nerve-currents, 156 

 fumes, action of, on nerves, 60 

 st imulating acl ion of, 7.") 



Alkalies, action of, On nerves and muscles, till 



Allantoic arteries, 17 1 



vein, 474 

 Allantois, 171 

 Allochiria, 400 



Ammonia, action of, on nerves, 60 

 Ammonium salts, action of, on muscles, 138 

 Amnion, 472 



Amniotic cavity, 472 

 Amceba, contractility of, 19 

 Amoeboid movement, 19 

 in neuroblasts, 176 

 in ova, 22 

 Amphiaster, 169 

 Amphimixis as cause of congenital variation. 



504 

 Amphioxus, reflexes in, 212 

 Amplitude of sound-waves, 381 

 Ampulla of 1 lenle, 1 17 

 Ampullae of the semicircular canals, 372 

 Ampullary nerves, stimulation of, 107 

 Amputation in man, effects of, on neurones, 196 

 Anaemia of the brain during fatigue, 288 

 Anaesthesia, contralateral, after hemisection of 



the cord, 233 

 Anaesthetics, action of. on nerve-currents, 155 

 Analgesia, 232 



following removal of the cerebellum, 272 

 Analysis of composite tones, 364 

 Anatomy of the ear, 362 

 Anelectrotonus, 62 

 Angular movements of joints, lit! 

 Anisotropic substance of muscle-fibres, 104 

 A nodal cont racl ion, .';•> 

 Anode, physical, definition of, 52 



physiological, definition of, 52 

 Anosmia, 411 

 Anterior association centre, 257 



roots, recurrent sensibility of, 204 

 Aphasia, 257 

 Apraxia, 259 

 Aqueous humor, index of refract ion of. 303 



Arteries, calcificati f. in old age, 191 



Arthropods, segmental nervous system of, 212 

 \ it icular cart ilages, 415 

 Articulation. i:;i 

 Articulations, varieties of, 414 

 Artificial circulation through the heart. 69 

 I In ough t he muscles. 68 

 stimulation of muscle compared with normal, 

 134 

 Aryepiglottic fold, I ! ! 

 Aryteno-epiglottidean muscle. 126 

 Arytenoid cartilages, 125 



muscle. 426 

 Asexual reproduction. 139 



I heory of t lie origin of, 1 1 1 



Aspirates. |.;7 



Association centre, anterior, 257 



middle, 257 



posterior, 257 



cerebral, varial ions in. 260 



fibres and centres of the cortex. 256 



tracts, origin Of, from central cells. 205 

 Astasia after removal of the cerehel In in. 273 



Asthenia from removal of the cerebellum, 27:'. 

 \-i igmat ic accommodal ion, •"•i | » 

 Astigmal ism. ::i7 



detect ion of, 319 



irregular, 319 

 Astral rays, contractility of, 470 



\tavisin. !!»."> 



507 



