230 



Also the American botanist, Mel. T. Cook, known by 

 his studies on galls, points out the necessity ofobtaining 

 data about the physiological conditions under which tera- 

 tological déviations arise and of undertaking experiments 

 in order to attain that end, •) 



November 1907. J. C. COSTERUS. 



POSTSCRIPT. 



The ovules of the Solaneae being anatropous as also 

 appears from my préparations, my attention was drawn 

 by the fact that in the pistillodic anthers some ovules 

 were abnormal and seemed to be orthotropous and without 

 any integument. Quite aware of the difièculty of making 

 a décisive statement regarding microscopic préparations 

 when direction and place of section are not accurately 

 known, I hâve repeatedly undertaken the same task but 

 always corne back to the same impression that, although 

 many ovules are anatropous, there are plenty of them too 

 of which the development is incomplète. In the above 

 quotations the same thing has been mentioned as having 

 been found by other authors. 



January 1908. J. C. C. 



1) Teratologia de la Pina (Tomado del Primer Informe Anual 

 de la Estacion Central Agronomica de Cuba, publicado el 1° de 

 Junio de 1906. 



