208 



The Journal of Heredity 



pigmentation, eye pattern, and exten- 

 sion factors. In all crosses of large 

 eyed beans with small white beans the 

 pigmented segregates in the second 

 generation had a greater average seed 

 weight than did the white segregates, 

 It is estimated that about five or six 



size factors must be invcjlved in most 

 of the crosses studied. These size fac- 

 tors are independent in their eflfect and 

 since they are often closely linked with 

 factors for qualitative differences the 

 effect of single factor differences for 

 size can be studied. 



Back Numbers of the Journal of Heredity Wanted 



THERE is a continual demand for 

 back numbers of the Journal 

 OF Heredity to complete files 

 for binding. Some requests are for 

 one number, and in other cases com- 

 plete sets are desired. Many of the 

 back numbers are carried in stock by 

 the Association, Init unfortunately sev- 

 eral are out of print. Members who 

 do not bind their Journals are there- 

 fore urged to make any of these miss- 

 ing numbers they may have available to cents a copy for the following numbers 

 those who are anxious to get them to of the American Breeders' Magazine : 

 complete 'their volumes. We will glad- Yq1_ j^ jsj'qs. i^ 3. 



ly ])ay forty cents a copy for any of Vol. Ill, Nos. 2, 3, 4. 



the numbers listed below, which should Vol. IV, Nos. 1, 2, 3. 



be mailed to Box 354 Pennsylvania 

 Avenue Station, Washington, D. C. 



Numbers wanted : 



Vol. V, Nos. 1, 2, 3, 4, 6. 



Vol. VI, Nos. 1, 4, 5, 6, 10, 12. 



Vol. VII, Nos. 1, 2, 4. 



Vol. IX, Nos. 2, G. 



Vol. X, Nos. 4, 6. 



Vol. XI. Nos. 1. 4. 



Vol. XII, No. 9. 



The Association will also pay forty 



