CONTENTS. 



sativum, tips of rariicles cauterised transversely, and on their 

 upper and lower sides — Phaseolus, cauterisation and grease on 

 the tips — Gossypium — Cuourbita, tips cauterised transversely, 

 and on their upper and lower sides — Zea, tips cauterised — Con- 

 cluding remarks and summary of chapter — Advantages of the 

 sensibility to geotropism being localised in the tips of the 

 radicles Page 23-545 



CHAPTEE XII. 



Summary akd Coscludikg Eemarks. 



?fature of the circumnutating movement — History of a germinating 

 seed — The radicle first protrudes and circunmutates — Its tip 

 highly sensitive-^Emergence of the hypocotyl or of the epicotyl 

 from the grcund under the form of an arch — Its circumuutation 

 and that of the cotyledons — The seedling throws up a leaf- 

 bearing stem — 'I he circummitation of all the parts or organs — 

 Modified circumuutation — Epinasty and hj'ponasty — Movements 

 of climbing plants — Nyctitropic movements — Movements excited 

 by hght and gravitation — Localised sensitiveness — Kesemblance 

 between the movements of plants and animals — The tip of the 

 radicle acts like a brain 546-573 



Index 574-593 



ERBATA. 



Page 3, foot-note, for Mr. Vine's read Mr. Vines'. 

 „ 452, line 7 from bottom, for minntes read misuteil. 



