Xll .CONTENTS. 



232. Tendrils, Pfeffer's contact experiment. 233. Mimosa, move- 

 ments produced by stimulation. 234. Mimosa, temperature. 235. Mi- 

 mosa, darkness. 286. Mimosa, continued stimulation. 237. Oxalis 

 acetosella, sensitiveness. 238. Oxalis, Briicke's experiment. 239. Dro- 

 sera, stimulated by meat and by inorganic matter. 240. Drosera 

 stimulated by dilute solutions. 241. Drosera, inflection indirectly 

 causes. 242. Berberis, irritable stamens. 243. Berberis, effect of 

 chloroform. 244. Stigma of MimUlus. 245. Centaurea, irritable 

 stamens. 246. Phyoomyces, curvature tovfards iron. 247. Hydro- 

 tropism. 248. Movement of chloroplasts. 249. Chemotaxis, 

 antherozoids. 250. Opening and closing of tulip, temperature. 



251. Tulip, sensitive to small change of temperature. 252. Crocus, 

 mechanism of movement. 253. Light and darkness, daisy. 254. Light : 

 and darkness, Trifolium. 255. Nyctitropic movements, Trifolium. 

 256. Do., Mimosa, self-recorded. 257. Paraheliotropism, Averrhoa. 



pp. 184-208. 



Section B. Autonomous movements. Feriodicity, 258. Cir- 

 cumnutation. 259. Do., twining plants. 260. Autonomous 



movements, Trifolium. 261. Do., Averrhoa. 262. Do., Desmo- 

 dium. 263. Periodicity, light and darkness, daisy. 264. Perio- 

 dicity, temperature, daisy. 265. Contrast, daisy pp. 209 — 216. 



PART II. 



CHEMISTRY OF METABOLISM. 

 CHAPTER IX. 



INTEODUCTION. SOLVENTS. METHODS OP EXTRACTION. 

 GENERAL NOTES ON APPARATUS AND MANIPULATION. 



Introductory. Preparation of material to be examined. Preparation 

 of extracts : non-nitrogenous plastic substances. Preparation of ex- 

 tracts : nitrogenous plastic substances. Filtration. Evaporation of 

 solutions. Changes occurring in solutions on keeping pp.221 — 230. 



