448 APPENDIX 



The angiosperms are divided into monoootyledons and dicotyle- 

 dons (396-398a). 



We have seen that certain great assemblages of plants are 

 called families (240a) ; and some remarks concerning the methods of 

 arranging or classifying these families are made in Obs. Ixxxvi. 



Various observations touching classification and relationships are 

 made in paragraphs : 187, 241, 242, 244, 246, 247, 247a, 250, 253, 

 260, 261, 262, 268, 324, 350, 369, 376, 376fl, 396-398(1, 427, 428a, 4286, 

 437a, 4376, Obs. Ixxxiv., Ixxxv., Ixxxvi. 



4. REMARKS UPON EVOLUTION AND THE INTER- 

 PRETATION OF NATURE 



While it is no part of the purpose of this book to teach or to 

 explain any of the hypotheses which attempt to account for the 

 ways in which the present forms of life have originated, the book 

 nevertheless assumes that there is evolution and that creation is 

 continuing. This attitude is positively essential to any clear com- 

 prehension of the attributes and meaning of the vegetable creation. 

 The reader who wishes to put together the suggestions of this char- 

 acter may consult paragraphs: 

 Struggle for existence— 5, 11, 13, 14, Obs. iv., 48, 80, 223, 305o, 412, 



518, Obs. Ixxiv., Suggestions page 402. 

 Variation and selection— 35, 71, 118, 118a, 134, 135, 137, 138, 175, 178a, 



Fig. 172, 208, 227, 233, 302, 315, 3316, 358, 444, 458, 484, 485, 



485a, 492, 492a, 518, Obs. Ixxxii. 

 Definitions— 53a, 536, 53c, 258a, 2586, 258c, 423a, 4236, 423c, 548. 

 Interpretation of nature— 116, 117, 118, 1186, 118c, 118d, 138, 152a, 



175, 187, 227, 235a, 258, 268, 2786, 278c, 281, 315, 318, 3316, 336, 



338, 339, Obs. Ixv., 485, 507, 509a, 518, Obs. Ixxxiv., 561-564. 

 Ecology- Obs. Ixxx., 422. 



5. THE GROWING OF PLANTS 



In the Suggestions on page 330 and in Observation Ixxiii. (page 

 374), brief directions have been given for the growing of plants. 

 Wherever there is sunlight and absence of frost, plants may be 



