INDEX. 



369 



Special cutaneous subdivision 



phylogenetic history, 127 



sense organs, 124, 61 

 Spinal cord, 12, i 



central canal, 12 



dorsal tracts, no, $2-55, 59, 60 



longitudinal zones, 48 



neuromeres, 38 



white and gray matter, 13 

 Spinal nerves, dorsal, 13, I 



components, 101, 105, 155, 200, 



45 



Spinal nerves, ventral, 13, 190, 200, 



i,45 



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



I 9 0, 20, 30, 31, 32, 104 



Spongioblasts, 46 

 Stimulus, 76 

 Striae Lancisii, 334 

 Stria medullaris, 322, 333 



see Tr. olfacto-habenularis 

 Striatum, see Corpus striatum 

 Subiculum cornu Ammonis, 348, 170 

 Substantia gelatinosa, 115, 56 

 Substantia reticularis, 219 

 Supraorbital neuromasts and nerve, 



59' i3- 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, 1 06, 1 08 



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, 333, 101, 145- 



150 

 Taste buds, 164, 85, 86, 87 



distinct from neuromasts, 165 



distribution, 22, 164 



origin of, 164 



phylogenetic history, 173 



24 



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

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

 Telencephalon, 28, 2, 7, 8, n, 12, 



145-170 

 evolution of, 292 

 i 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 

 i 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, 101,133,134,136,140, 

 142, 145-150 

 Tractus lobo-bulbaris, 171, 89, 92, 



101, 116, 133 

 Tractus lobo-epistriaticus, 297, 92, 



145, ISO 

 ; Tractus mammillo-bulbaris (pedun- 



cularis), 275, 92, 101, 136 

 ! Tractus mammillo-thalamicus, 275, 



136 

 Tractus olfactorius, 182, 295, 2, 101, 



145-150, 157 

 Tractus olfactorius septi, 307, 150, 



155 



Tractus olfacto-corticalis, 301, 307, 



147, 150 



Tractus olfacto-habenularis, 184, 297 



ff., 101, 145-150, 164 

 i Tractus olfacto-hypothalamicus, 184, 



297 

 lateralis, 300, 303, 307, 101, 



147, ISO 

 medialis, 275, 300, 303, 307, 



101, 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 

 I Tractus sacco-thalamicus, 282, 134, 



144 



Tractus spinalis trigemmi, 114, 56, 

 59, 60, 64 



