75 
terest and cooperation of Mrs. James A. Burden, Mr. John W. 
Minturn, and Mr. Paul Hammond, the owners of the trees on 
Long Island. 
Economic BoTany 
By Ratepu H. CHENEY 
Material from the several species of coffee, growing in the trop- 
ical plant house, was utilized in a study of the chromosomes in this 
genus. A study to determine the formation of coffee-leaf glands 
is likewise in progress. 
The summer of 1933 was spent at the Marine Biological Lab- 
oratory at Woods Hole, Massachusetts. Studies regarding the 
effect of alkaloids, especially the methylated xanthines which occur 
in the genus Coffea Linn., were conducted with reference to the 
animal organism. 
REPORIMOF (HE CUORALOR «OFM PibA NS BORGIIS3 
Dr. C. Stuart GAGER, DIRECTOR 
Sir: I submit herewith my report for the year ending December 
sul DIRS Bier 
Iris PLANTATIONS 
Dr. Reed, in charge of Iris, reports as follows: 
Many of the newer varieties of Tall Bearded Iris were added to 
the collection. 116 varieties were received on the basis of ex- 
change from the following: 
Mr. Harry Esty Dounce, Bayside, L. IL. .............-...... 4 varicties 
Mrs. J. F. Emigholz, Kenwood Iris Gardens, Cincinnati, O. .. 26 * 
Mr. Fred R. Whitney, Hudson Gardens, Germantown, N. Y. .. 11 a 
Mr. Clint McDade, Chattanooga, Tenn, ................0.005 14 i 
Mr. John: Ay. Monroe,-Chulay Vista. Galore n.3.c ee eee he. 6 ie 
Mind Roberts Wayinan, Bayside 1s. 1h? misao eee ane 25 is 
Mr. John C. Wister, Philadelphia, Pa. ...................... 30 sf 
Mrs. Z. G. Simmons, Greenwich, Conn., sent us 17 varieties as 
a gift. 
76 species were added to the collection by exchange from the 
following: 
