INDEX. 



50I 



Protogaster, i. 444 ; ii. 314 



Protomyxa, ii. 46 

 Protonephra, ii. 410 

 Protoplasma, i. 131 

 Protopterus annectens, ii. 119 

 Protozoa, ii. 248 

 Protureter, ii. 406 

 Psendopodia of Amoebae, i. 142 

 Psyche, ii. 225, 446 

 Psychology, ii. 448 

 Pubic bone, ii. 278 

 Punctum germinativum, i. 135 

 Pupil, ii. 252, 258 

 membrane, ii. 254 



Radius, ii. 278, 304 



Rathke, Heinrich, i. 59 



Rathke's ducb, ii. 415, 431 



Reason, ii. 453 



Reichert, Bogulaus, i. 61 



Remak, Robert, i. 62 



Benes, ii. 412 



Reproduction, i. 159 



Reproductive organs, ii. 392, 413 



Eeptiles, ii. 120, 138 



Respiratory intestine, i. 262 ; ii. 330 



organs, i. 262 j ii. 333 



Retina, ii. 252, 258 

 Ribs, ii. 285 

 Rolle, Friedrich, i. 101 

 Round-mouths, ii. 101, 120 

 Rudimentary organs, i. 109 

 Rump bone, ii. 282 



vertebrsB, ii. 282 



Rusconi, anus of, i. 206 

 Rusooni's nutritive cavity, i. 207 



Salamander, ii. 127 

 Salivary glands, 

 Sauropsida, ii. 138 

 Scapula, ii. 278, 303 

 Schleiden, M. J., i. 60, 123 

 Schwann, Theodor, i. 60 

 Sclerotica, i. 251, 258 



Scolecida, ii. 86 

 Scrotum, ii. 423, 431 

 Sea-nettles, ii. 73, 92 

 Secondary age, ii. 11, 14 



axial skeleton, ii. 291 



germ-layers, i. 235, 273 



kidneys, ii. 412 



sexual character, ii. 396 



strata of earth, ii. 12 



Seed (male), i. 36 



animalcules, i. 173 



cells, i. 173 



duct, ii. 403, 429 



Segmental canals, ii. 406 

 Segmentation, i. 186 

 Segmentella, i. 186 

 Selachii, ii. 112, 121 

 Selection, theory of, i. 95 

 Semi-apes, ii. 164, 187 

 Semicircular canals of ear, ii. 263 



268 

 Semper, Karl, i. 91, 426 

 Sense of pressure, ii. 238 



of warmth, ii. 238 



Sense-organs, ii. 238 

 Sensorium, ii. 194 

 Sensory apparatus, ii. 194 



functions, ii. 238 



layer, i. 236, 229 



nerves, ii. 238 



Sexes, separation of, ii. 69, 396 

 Sexual cells, origin of, 



cord, ii. 418 



ducts, ii. 402, 429 



folds, ii. 422, 431 



furrow, ii. 422 431 



glands, ii. 398 



nerves, ii. 238 



organs, i. 266 



plates, ii. 399 



selection, i. 103 ; ii. 394 



sense, ii. 238 



Sheath (Vagina), ii. 417, 431 



of amnion, i. 387 



Shin-bone, ii. 278, 304 

 Shoulder-blade, ii. 278, 304 



girdle, ii. 278, 304 



Side-layers, i. 303 



plates, i. 303 



sheath, i. 303 



Silurian period, ii. 9, 19 

 Simice, ii. 165 



