INDEX AND GLOSSARY. 429 



Sarcoma, 279. Fibro-plastic tumor. 



Sarcina, 328. A vegetable organism sometimes classed 

 among Algse. 



Sarcoptes Scabiei, 338. Itch-insect. 



Sandhopper, 174. An amphipod Crustacean. 



Sclerogen, 130. Woody tissue. 



Scales of Lepidoptera, 175. 



Section-cutter, 63. 



Sections of hard tissues, 62. 



Secretory Organs, 208. Glands. 



Section of skin, 218. 



" " crystals, 100. 



" " embryo, 205. 



" knife, 228. 



Sebaceous Glands, 209. Glands of skin secreting fatty matter. 

 Sea nettles, 166. Jelly-fish. 

 " slugs, 167. Holothuria, etc. 

 " urchins, 169. Echinus, etc. 

 Serpula, 172. A genus of Annulata. 

 Setae, 177. Lancets of Diptera. 

 Sensory Organs, 218. Organs of special sense. 

 Selenite stage, 44. 

 Seeds, 157. 

 Serous infiltration, 245. 



" exudation, 253. 

 Screw bacteria, 327. 



Scolex of Tapeworm, 332. The head set free from the csyt 

 in development. 



Scirrhus, 288. Hard cancer. 

 Schacht's staining fluid, 68. 

 Scalariform Vessels, 155. Vessels of ferns. 

 Showers of Flesh and Blood, 322. Gelatinous masses, of 

 vegetable origin. 



Shadbolt's turntable, 78. 

 Shell structure, 170. 



Steel Disk, 40. A substitute for the camera lucida. 

 Spectra, 102. Lines or bands seen with the spectroscope. 

 Soil and water, examination of, 322. 



Somatopleure, 203. Layers of the embryo which form the 

 walls of chest and abdomen. 



