XX THE MICROSCOPE. 



PIG. PAGE 



229. Scale reduced to a hair from clothes-moth 85 



230. Hair-like scale from clothes-moth, with three 



prongs 89 



231. Cartilage from mouse's ear 91 



232. Transverse section of human bone 90 



233. Striped muscular fibre from meat 92 



234. a. Liber fibre of flay, natural state , . . . . 79 



b. Ditto, broken across at short intervals 



235. Wool from flannel 79 



236. Silk ., 79 



237. Cotton hair 79 



238. Crystal of honey f;l> 



239. Thick crystal of ordinary sugar same angles .... 39 



240. Crystals of sugar from adulterated honey 40 



241. Cuticle from berry of holly 35 



242. Transverse section of whalebone 90 



243. Transverse section of plum-stone 31 



244. Transverse section of testa of seed of Guelder rose 13 



245. Fruit of groundsel opaque 42 



246. One hair of pappus of dandelion 42 



247. Cottony hair of burdock 42 



248. Portion of pappus of goats-beard 42 



249. "Wood of young shoots of vine, the cells containing 



starch S3 



250. Spiral fibres from testa of wild sage seed 35 



PLATE IX. Frontispiece to face title-page. 



1. lodo-sulphate of Quinine 



2. Salicine 



3. Aspartic Acid 



4. Sulphate of Copper in Gelatine 



5. Grey Hair (human) 



6. Scales of Hyppophas rhainnoides 



