﻿302 BOTANICAL GAZETTE [april 



widely differing opinions which have been held since the time of Goethe, and 

 illustrates the present and past valuation of teratological observations as data 

 for morphological conclusions by a review of the work which has been done 

 in the Abielineae. Here he admits freely the importance of embryogeny in 

 the solution of questions in morphology, but also calls attention to some of 

 the conclusions which have been reached by the recognized leaders in 

 embryology, and suggests that it would be interesting to compare, both as to 

 number and importance, the erroneous conclusions which have been drawn 

 from embryological evidence with those which are to be attributed to the 

 "Irrvvege der Missbildungslogik." He expresses his own belief in the value 

 of teratological evidence in the solution of morphological questions. Over 

 one hundred pages are then devoted to the floral abnormalities, arranged 

 according to the nature of the malformation, which have been observed in 

 native orchids growing in the open. A discussion of the different types of 

 abnormalities observed is not possible in this place, and of their value only 

 the specialist can judge, but the mass of observations and references to 

 literature will surely be of great value. The paper is illustrated by six litho- 

 graphic plates.— J. Arthur Harris. 



