THE EVOLUTION OF PLANTS 



Morgan, T. H. The Physical Basis of Heredity. Philadelphia, 



1919. 

 Newman, H. H. Evolution, Genetics, and Eugenics. Chicago, 



1925. 

 Scott, D. H. Studies in Fossil Botany. 2d ed., London, 1909- 

 Scott, D. H. The Evolution of Plants. New York and London, 



1911. 



Scott, D. H. Extinct Plants and Problems of Evolution. Lon- 

 don, 1924. 



Seward, A. C. Links With the Past in the Plant World. Cambridge 

 (Eng.), 1911. 



Vries, Hugo de. The Mutation Theory. Eng. trans, by Farmer 

 and Darbishire. Chicago, 1909- 



Vries, Hugo de. Intracellular Pangenesis. Eng. trans, by C. 

 Stuart Gager, Chicago, I9IO. 



White, Orland E. (In Gager's General Botany. Chapters XL- 

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"There is a grandeur in this view of life, with its several powers, having 

 been originally breathed by the Creator into a few forms or into one; and 

 that, whilst this planet has gone cycling on according to the fixed law of 

 gravity, from so simple a beginning, endless forms most beautiful and most 

 wonderful have been and are being evolved." — Darwin. 



"Nature! We are surrounded and embraced by her; powerless to separate 

 ourselves from her, and powerless to penetrate beyond her. 



"She is ever shaping new forms; what is, has never yet been; what has 

 been, comes not again. Everything is new, and yet naught but the 

 old." — Goethe. 



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