!Rew York AoEicuLTURxiL Experiment Station. 435 



fruit produced by a generation is any criterion of its genetical 

 composition, it is safe to assume that the majority of the plants 

 in this Fa generation were homozygous — their yield corre- 

 sponding very closely to that of the Livingston Stone. This 

 assumption is further substantiated by the fact that this F3 gen- 

 eration, and the F4 generation, produced by self-fertilizing the 

 F3 generation, gave very similar results in the summer of 1910. 

 This season's results show practically no difference in the total 

 yield of the first and second generations. The total yield of the 

 third generation and the Livingston Stone as noted above are 

 nearly identical. The total ripe fruit per plant of the third 

 generation exceeds that of the first and second generations — the 

 first generation, however, leads at end of the second period all 

 the crosses and varieties by over half a pound per plant. Further 

 difl^erences in the yields are discussed more fully later in the 

 Bulletin. 



summer experiment, 1910. 

 Seed for the summer crop of 1910 was obtained from plants 

 of the crosses and of their parents grown in the greenhouse during 

 the winter of 1909-1910. The 1910 experiment was conducted 

 in the same manner as during the previous seasons, except one 

 more generation was added, namely, the fourth. Results which 

 corresponded with the previous ones were obtained, notwithstand- 

 ing the fact that the plants suffered from several mishaps. On 

 May 27th the plants, a little too spindling, were set out in the 

 field. The following two days were cold and rainy and shortly 

 afterwards the foliage turned yelloMnsh and appeared unhealthy. 

 The ground had been previously manured and plowed, so the 

 trouble can be laid neither to the soil nor to the lack of food. 

 Within a week of the date the plants were set in the field, cut- 

 worms had either destroyed or injured several plants. A mixture 

 of sweetened bran and an arsenical poison distributed in spoonful 

 quantities at the base of each plant stopped the work of the cut- 

 worm, but did not lessen the troubles. A rain following the 

 application of the poisoned bran washed the soluble arsenic into 



