64 a EXPERIMENT STATION. [Jan. 



consideration and publication with those secured in these out- 

 side localities. 



The work in plant breeding has been a continuation of that 

 previously carried on with beans, squashes and peas. With the 

 plants grown during the past summer we have records on over 

 30,000 bean plants, including about 120 crosses, involving some- 

 thing over 20 varieties. This work has resulted in the accumu- 

 lation of an immense mass of data bearing on the inheritance 

 of pigmentation. This matter is being worked over at the 

 present time, and it is hoped that it may be ready for publica- 

 tion in the spring as a joint publication of Mr. jSTorton and 

 myself. While this leaves many questions of inheritance of 

 pigments and pigment patterns unsettled, it throws a great deal 

 of light not only upon the manner of inheritance of pigments 

 and pigment patterns, but also upon the mode of inheritance in 

 general. 



The work with squashes has been confined to an attempt to 

 isolate pure races, as previous work had indicated that our 

 common varieties of squashes are a miscellaneous collection of 

 heterozygous forms. Plants of the third self-fertilized genera- 

 tion almost completely failed to grow during the past summer. 

 The attempt to grow this generation will be repeated next sum- 

 mer to discover whether this is the necessary result of continued 

 self-fertilization. We w^ere fortunate in having a surplus of 

 seeds of the previous generation which enabled us to repeat the 

 selfing last summer. ' Individual squashes from each vine were 

 photographed last fall, this having proven the most satisfactory 

 method of recording the different types which are isolated from 

 commercial varieties. 



With peas, the work of selecting within the pure lines was 

 continued by growing and measuring of several thousand plants 

 during last summer. A compilation of the results of this third 

 season of selection gives negative results, the difference between 

 the vines selected for length and those selected for shortness 

 being less than during the first year that selection was practiced. 

 This should be continued for a period of years to discover 

 whether this is a permanent result or whether only accidental 

 for this particular year. 



