516 INDEX 



Geological periods, 467, v. Chart, 479 



Cambrian, 92, 141, 348, 473 



Carboniferous, 141, 183, 337, 348 



Cretaceous, 92, 284 



Devonian, 135, 182, 200, 327, 331, 336, 

 467 



Eocene, 479 



Jurassic, 301, 354 



Lias, 269, 354 



M(e)iocene, 342 



Mesozoic, 335, 337 



Oligocene, 342 



Ordovician, 137, 350 



Palaeozoic, 141, 147, 335 



Permian, 183, 235, 267, 300, 337, 348 



Pl(e)iocene, 479 



Pl(e)istocene, 479 



Primary, 479 



Red Sandstone, v. Devonian 



Secondary, 479 



Silurian, 465 



Tertiary, 479 



Triassic, 479 

 Geotria, 181, 187, 265, 313, 468 



pigment cells of parietal organ, 69 

 Giddiness, 438, 457, 459 

 Gigantism, transitory, 428 

 Gill slits, 



of Hemichorda, 170 



of Tunicata, 170 

 Glabella, 192 



absence of impressions in, 137, 138, 

 141 



metamerism of, 139, 141, 142 



significance of impressions, 142 



of Trilobites, 137, 141, 142 

 impressions on, 142 

 Glabellar plate, 327, 328 

 Glandula pinealis, 3 

 Glia cells, 318, 322 

 Glial 



plaques, 320, 469 



tissue, degenerate areas of, 319, 320 

 Gliosomes, 384 

 Glochinodontoides gracilis, 301 

 Glycosuria, 438 

 Gnathostomi(a), 344 

 Gonadal development, acceleration of, 



427 

 Gongylus ocellatus, 281 

 Gorgonopsian reptile, 302 

 Grammatophora muricata, 243, 273, 275 

 Granules, 



fuchsinophile, 219 

 secretory, 219, 317, 399 

 See pigment. 

 Grenzmembran, 402 

 Grosbeak, 295 

 Growth, 



disturbances of, 439, 476 

 increased rate of, 427 

 inhibition of, 425 

 premature, 425 

 retardation of, 425, 427 

 Guanin, 63, 191 

 Gunda, pigment spots of, 25 



Gymnopis, 227 

 Gynaecomastia, 477 



Habenula, 326, 417 

 Habenular 



commissure, 180, 205, 244, 417 



ganglia, 417, 468 

 difference in size of, 185, 187, 188, 215 



ganglion, 7, 19, 180, 184 



right, 19, 28, 185, 187, 194, 215, 246 

 left, 187, 215, 246 



tract, 192 

 Haematochrome, 66 

 Hcemopis sanguisuga, 21, 329, 353 

 Haemorrhage, control of, 443 



by diathermy point, 444, 447 



by silver clips, 444 

 Hag 



fish, 187 



fishes, 47, 344 

 Hair, 



in pineal teratomata, 431 



increase of, in axilla, 439 

 in pubic region, 439 

 on lips and chin, 439 

 Hammer marking, due to increased intra- 

 cranial pressure, 464 

 Harpes ungula, 137 

 Hatteria punctata, see Sphenodon, 253 

 Haversian systems, 474 

 Headache, 438, 449, 452, 453, 454, 459 

 Head-shield, of Ammoccetes, 191 



of Anaspidce, 331 



of Auchenaspis, 191 



of Cephalaspis, 191 



of Cyathaspis, 202 



of Didymaspis, 191 



of Dinichthys, 182 



of Hydrodroma, 130 



of Kiceraskis, 328 



of Osteolepis, 182 



position of sense-organs in, 136 



of trilobites, 137, 141, 142 

 Heart, 



relation of to alimentary canal, 106 



ventral position of in tunicates, 170 

 Heat, sensitivity of parietal organ to, 6 

 Helix nemoralis, 151 

 Hemianesthesia, 438 

 Hemianopia, homonymous, 438, 446 

 Hemichorda, 168 



free-swimming types, 168 



fixed types, 168 

 Hemidactylus, 252, 272 

 Hemimyaria, 176 

 Hemiplegia, 446 

 Herpele, rudimentary state of lateral eyes 



in, 227 

 Heterostraci, 344 

 Hinulia, 282 

 Hirsutes, 431 

 Hirudo, segmental arrangement of paired 



eyes, 101 

 Holocephali, 200 

 Holostei, 337 



