(271) 
I am not yet ready to decide wlwthei， it ;s the general rule that 
the quantity of nourishment local か sup が ied during the development 
of a flower is the chief cause which determines its sex. 
What serves as the cause d がが iriining the sex of a flower may differ 
in quantity and quality in (liff が. eiit sp が ies according to their ‘（ Bk)]o だ ie.，， 
There may be, however, a g が; it rmmb け r of plants in which the 
chief cause determining the sex of the flower is the quantity of nourisli- 
nient 10 caHy supplied. In fact, the が occurs in flow げ s of some cultivated 
plants the か ausformation of stamens into pistils, while the opposite 
iseems to be very rarely the case. Tb is seems to be certainly in む ivoi け 
of け1€5 view. • 
1 may add here that I intend to publish the d が ails of ray pi’ が ent 
commnriicatio 打 with plates in some other journal. 
July 9 化， 1895. ‘ 
