5384 Wester: POLLINATION EXPERIMENTS WITH ANONAS 
pollinated, in others from other flowers of the same tree. Ina 
few instances pollen of the sugar apple and the pond apple was 
applied. Thirty-four flowers were pollinated twenty-four or more 
hours before the shedding of the pollen and all set. Many of 
these dropped after partial development but the dissection of the 
FIGURE 4. Pond apple 
| flowers; a type introduced from Trinidad, B. W. I. 
(One third natural size.) 
immature fruits showed that fertilization had taken place and that 
the drop was due to some other cause. In many instances it 
was undoubtedly due to overproduction, as the tree few too small 
to bring to full maturity all the fruits that set. Pollination of the 
flowers on the same tree in 1909, according to the theory of pro- 
