164 TOMATO. 
reason for these facts suggested itself. I finally came to 
feel that this irregularity and perhaps the smallness were 
often due to irregular or insufficient pollination, although 
it is probably true that lack of sunlight has something to 
do with the inferior size. The first definite aid towards the 
solution of the problem was the result of an experiment 
performed by my former assistant, W. M. Munson.* Mr. 
Munson pollinated two fruits upon the same cluster with 
pollen from one source, but in one flower very little pol- 
len was used, and it was applied upon one side of the 
stigma only, while the other flower received an abun- 
dance of pollen over the whole surface of the stigma. The 
result is shown in Figs. 55 to 57 (pages 164 and 165). In 
Fig. 55, the large fruit received the more pollen, and it is 
fully four times as large as the other, which received a 
very small amount. Moreover, the large fruit was practi- 
cally symmetrical, while the small one was one-sided. 
Figs. 56 and 57 (page 165) show cross sections of these 
*A report of fuller studies in this direction by Professor Munson 
may be found in the Annual Report of the Maine Experiment Station 
for 1892, Part ii. 
