GENERAL, INDEX B25 
Evolution of brain in brain-case, 210 
5 cranium of Vertebrate, 342 
i excretory organs, 389 
a4 eye of Vertebrate, 114 
2 nervous system, central, 34 
<3 tissues, 19 
rs Vertebrate from Balanoglossus and Amphioxus, 33 
Eyes, 68 
» lateral, 87, 105, 108 
» median or pineal, 74, 77, 78, 79 
Fat-cELLs in muco-cartilage, 332 
Fat-column of Ammoccetes, 181, 182 
Fibres, Mauthnerian, 488 
,  Millerian, of Ammoccetes central nervous system, 489 
55 retina, 96, 107 
Fishes, classification, 218 
» ancient, classification, 326, 343 
AS +. cloacal region, 450 
53 ma dominance, 23 
” ” eyes, 75 
es a head-shields. See Head-shields 
on A pleural folds, 414 
Fissure, posterior, 43 
Fittest, survival of, 16, 34 
Flabellum, 359, 8360, 362, 363, 366 
Folds, pleural, 410, 414 
Function of auditory organ, double, 358 
90 lateral line sense-organs, 357 
m nerves, 448 
- thyroid, 212, 215 
Fusion of ganglia, 52 
GaLEopEs, 230 
39 brain, and camerostome, 222, 223 
a primordial cranium, 341 
” racquet-organs, 369, 375 
Ganglia, infracesophageal, 4, 12, 14, 51, 221 
” supracesophageal, 4, 12, 14, 49, 52, 221, 225 
Pr origin of, of cranial and spinal nerves, 281 
Ganglion, epibranchial, 164, 282 
i habenule, 48, 78 
5 optic of retina, 72, 89, 97 
i of posterior root, 466 
9 cells of sympathetic system, 424, 428, 448 
Ganoids, 23, 345 
Gastrula theory, 165, 459 
Genital corpuscles, 470 
Geological record, 20 
4 strata, 22 
Geotria australis, 80 
Germ-band, 482 
