Plate VI. 



Outlines of Bartlett pears. These figures aud the following outlines were made 

 by cutting the pear through the middle and laying one-half on the paper and tracing 

 the outline with a pencil. Figs. 1-3 are from flowers pollinated with Bartlett pol- 

 len. These three fruits, with the four on Plates i and ii, were all the self-pollinated 

 Bartletts that reached maturity in my experiments. It is interesting to note the 

 remarkable uniformity of the series. Photographs of the seeds of Nos. 3342 and 

 3925a may be found in PI. xi. Descriptions in the text occur on p. 60-65. 



98 



