CONTENTS. 



HltivTim, tips of radicles cauterised transversely, and on theit 

 upper and lower sides Phaseolus, cauterisation and grease on 

 the tips Gossypium Cucurbita, tips cauterised transverse iy, 

 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 AND CONCLUDING HEMAUKS. 



Nature 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 circumnutation 

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

 bearing stem 'I he circumnutation of all the parts or organs 

 Modified circumnutation Epinasty and liyponasty Movements 

 of climbing plants Nyctitropic movements .Movements excited 

 by light and gravitation Localised sensitiveness Resemblance 

 between the movements of plants and animals The tip of the 

 radicle acts like a brain 546-573 



IKDES .. 574-593 



