The Transmutation Theory Before Darwin. 23 



riched science with a collection of experimental facts of 

 the greatest importance. A considerable portion of the 

 fourth chapter of this work will be devoted to a critical 

 consideration of these facts. 



Fig. 4. Subspecies of Viola tricolor. j.V.agrestis', 2.V. 

 segetalis, general habit similar to that of I', agrestis ; 3. 

 V. gracilescens; 4. V. pallescens ; 5. V. nemausensis. 

 (After A. Jordan, Observ. s. plusicurs plantes rares ou 

 critiques, II, 1846. Plates i and 2.) 



The description of any form as a species, or rather 

 the supposed proof that any form zvas a species, carried 



