56 



1)e rc(|uircfl. This year wc have made a s])C'cial effort to increase 

 the ])lii;lit resistance of otu" ja])anese-.\nierican hybrids In' crossing 

 tlieni at^'ain witli oin" most resistant jai)anese and Chinese indi- 

 \'i(hials. We have continued om" nietliod of testing' each incH- 

 vi<hu'il 1)y incKnihitinti," it with the l)lii;ht. 



.Isslstaiicc Olid Coopcralioii of I nsliliilloits and Iiidii'iduals. — 

 The corchal interest and real assistance oiTered l)y many in(h\-iduals 

 and institutions liave l)een indeed enconi'ai^inj^'. l^^ir the third vear 

 in succession we were awarded a s^rant-in-aid from tlie National 

 Academy of Sciences, througli the National Research Council at 

 Washington. D. C. In addition, tlie Division of Forest l\ithology 

 of the U. S. D. A. hel])ed us financially during the summer. 

 Through the continued cooperation of the Xortheastern I-^orest 

 Experiment Station at Xew Haven, Conn., Afr. C. l^dward Ik'hre, 

 Director, we were given the services ol a young forester, Mr. h.d 

 Mish, of the Yale School of Forestry, during the flowering season 

 of the chestnuts, in jime and July. 



On December 30, T),^S, we were awarded a grant-in-aid by the 

 American Association tor the .Vdvancement of Science to assist in 

 our work for F)3*i. 



I'ollen of the chestnut was recei\'ed from the following insti- 

 tutions or persons, whose cooperation we take pleasure in acknowd- 



Juiie 22. From Di\-isii)n of h^)rest Pathology. U. S. D. A., 

 Washington, D, C.. through Mr. K. V>. Cla])]X'r. Pollen of 

 Castaiica ocarkciisis, .Islici. alahaiiiciisis, iiiar(/ayclla, and 

 dcntaia (ICP. .555). 



June 2.\ From T. V. A., Norris, Tenn.. through Mr. J. C. 

 McDaniel. Tollen of C. dcniala "Seymour" (S.P. 550). 

 C. dcutata " d'a.it," La Sueur hybrid (C. piiniila x C. dcn- 

 taia). and C. crcuata (S.I'. 541). 



Jtme 24. From Division of b\)rest Pathology, U. S. D. A.. 

 Washington. 1). C., through Mr. R. B. Clapper, pollen of 

 C. dcutata (P.P. 555), Hoone (C. crcnata x C. dcutata) 

 and Alarron ( C. saliva) — the last two from Arlington, \'a. 



lulv S. lM-(tm Dr. W. C. Deming, Litchfield, Conn. Pollen of a 

 N'aluable indi\idual of Caslanca iiiollissinia. 



