166 APPENDIX II 



CHAPTER XIX 



FERTILIZATION 

 General Reading 



Kerner and Oliver, Volume II, Part i, pp. 401-420. 

 Gray, Text-book, pp. 215-218 and 283-285. 

 Allen, The Story of the Plants, pp. 73-86. 

 Gaye, The Great World's Farm, pp. 190-207. 



THE distinction between pollination and the descent of the 

 pollen tube upon the one hand and fertilization upon the 

 other is one demanding much emphasis, and the teacher 

 must not only impress it upon the pupil, but must constantly 

 guard against the misuse of the terms both upon his own 

 part and upon that of the pupil as well. 



Fertilization refers to the whole process upon which the 

 development of the embryo depends. This technical use 

 must be guarded from confusion with the fertilization of the 

 soil either natural or artificial. The process of pollination is 

 the process which may be studied with the facilities open 

 to the ordinary student, and must be studied in the field to 

 be comprehended in its variety of interests. Some typical 

 examples may be brought into the laboratory, but excur- 

 sions with the view of examining the plants in their natural 

 habitat, and encouragement to the pupils to make excur- 

 sions for themselves, to watch and attempt to make out the 

 details of the fertilization in as many different kinds of flow- 

 ers as possible, is very necessary. Such work as this is far 

 better than any laboratory work which can be conceived of. 



