76 
The conclusions reached so far in regard to the latter are: 
1. That the various willow oaks hybridize with the many- 
lobed black oaks, producing forms which rese mble the drawings 
ichau: 
The Q. heterophylla of Cliffwood is a hybrid of 0. Phellos 
and either Q. coccinea or Q. velutina. 
. The thin leaves, small and nearly smooth winter buds, 
reddish inner bark, bark not bitter, indicate Q. coccinea rather 
velutina as one parent. 
4. The apparent absence of Q. rubra and the deeper cups of 
the acorns eliminate Q. rubra as a possible parent in the Cliff- 
wood forms. 
The studies show conclusively that some of the hybrids are 
quite identical to Q. heterophylla and are suggestive that several 
different hybrids have been referred to this name. 
The development of seedlings now bei own will, 
hoped, reveal the parentage of the pri iene at an 
wood which are of the heterophylla ty: 
. B. Stout, 
Secretary of the Conference 
NOTES, NEWS AND COMMENT 
Among the visitors who have registered in the Library during 
the past ae e Professor L. H. Bailey, of Ithaca, New York, 
and Professor Collier Cobb, of Chapel Hill, North Carolina. 
One of the most difficult tasks in the routine of library work 
ort has been made to bring these files up to date, with good 
results in many cases 
E. Stone, professor of botany at the Massachusetts 
di 
Dr. Geo: 
State Asa College and Experiment Station, is ie in: 
some time at the Garden in research work in physiolog: 
