INDEX. 



369 



Special cutaneous subdivision 



phylogenetic history, 127 



sense organs, 124, 61 

 Spinal cord, 12, i 



central canal, 12 



dorsal tracts, no, 52-55, 59, 60 



longitudinal zones, 48 



neuromeres, 38 



white and gray matter, 13 

 Spinal nerves, dorsal, 13, i 



components, loi, 105, 155, 200, 



45 



Spinal nerves, ventral, 13, 190, 200, 



1,45 



Spino-occipital nerves, 23, 52, 63, 105, 



190, 20, 30, 31, 32, 104 

 Spongioblasts, 46 

 Stimulus, 76 

 Striae Lancisii, 334 

 Stria medullaris, 322, ^^^ 



see Tr. olfacto-habenularis 

 Striatum, see Corpus striatum 

 Subiculum comu Ammonis, 348, 170 

 Substantia gelatinosa, 115, 56 

 Substantia reticularis, 219 

 Supraorbital neuromasts and nerve, 



59, 130, 51,62,63 

 Sympathetic system, 206, 108, 109, 

 no 



axone-reflex, 214, no 



chain ganglia, 206 



development, 206 



efferent fibers, 210 



excitatory cells, 211 



peripheral ganglia, 206 



prevertebral ganglia, 206 



rami communicantes, 14, 156, 

 207, 45, 77, 106, 108 



relation to visceral divisions, 214- 

 216 



sensory cells, 213, 108 



sensory fibers, 208, 77, 108 

 Tactile impulses, 105, 155 

 Tacto-motor collaterals, 82, no, 197, 



41,52 

 Taenia semicircularis, 324, 166 

 Taenia thalami, 322, ^^^, loi, 145- 



150 

 Taste buds, 164, 85, 86, 87 



distinct from neuromasts, 165 



distribution, 22, 164 



origin of, 164 



phylogenetic history, 173 



24 



Tectum opticum, 147, 255, 261, 73, 74 

 Tela chorioidea, 28, 305, 2, 145-151 

 Telencephalon, 28, 2, 7, 8, 11, 12, 



145-170 

 evolution of, 292 

 Tertiary gustatory tract, 169, 89, 92, 



112-117 

 Tract of Gowers, 243 

 Tractus bulbo-tectalis, 117, 59, 112- 



117, 124, 125, 133, 134 

 see also Lemniscus system 

 Tractus cortico-habenularis, 322, 152, 



164 

 Tractus gustus secundus, 169, 89, 90, 



92, 112-117 

 Tractus gustus tertius, 169, 89, 90, 



92, 112-117 

 Tractus habenulo-peduncularis, 184, 



277, loi, 133,134,136,140, 



142, 145-150 

 Tractus lobo-bulbaris, 171, 89, 92, 



loi, 116, 133 

 Tractus lobo-epistriaticus, 297, 92, 



145, 150 

 Tractus mammillo-bulbaris (pedun- 



cularis), 275, 92, loi, 136 

 Tractus mammillo-thalamicus, 275, 



136 

 Tractus olfactorius, 182, 295, 2, loi, 



145-150, 157 

 Tractus olfactorius septi, 307, 150, 



155 

 Tractus olfacto-corticalis, 301, 307, 



147, 150 

 Tractus olfacto-habenularis, 184, 297 



ff., loi, 145-150, 164 

 Tractus olfacto-hypothalamicus, 184, 

 297 



lateralis, 300, 303, 307, loi, 

 147, 150 



medialis, 275, 30c, 303, 307, 

 loi, 137, 145-150, 164 

 Tractus olivo-cerebellaris, 243 

 Tractus opticus, 28, 70, 128, 135, 

 141 



centers of, 147, 261, 73, 74, 

 128, 130, 131, 141 



centrifugal fibers, 148, 265, 72 



chiasma of, 28, 146 

 Tractus sacco-thalamicus, 282, 134, 



144 

 Tractus spinalis trigemini, 114, 56, 



59, 60, 64 



