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 



S5- The effects of muck and little pollen. 



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. 



