103 
June 24. ‘The History and Sources of Quinine’ 
Dr. H. H. Rusby 
June 30. ‘‘ Flowers of the Four Seasons’’ Mr. K. R. Boynton 
CONFERENCE NOTES FOR APRIL 
staff and students of the Garden held the last monthly 
Rie of the spring on Wednesday, April 4. The program 
Gall” Dr. Mel. ook, and on ‘The Annonaceae of the 
Beni River Valley” by Dr. H. H. Rusby. 
r. Cook said that galls or tumors of various kinds are caused 
by insects, fungi, slime molds and bacteria. They have been 
tion has been given to n oie tae recent years h 
studies under aunane at time were undertaken to 
determine the early stages of ne crown gall (caused by B. tume- 
faciens) on castor bean seedli s. The galls originate in cortex 
or 3 Rares ‘he tissues of the fibro-vascular bundles 
storted but the tissues have under: c 
aieendecena to be affected otherwise. The tumor strands 
a pear in either cortex or pith enchyma. in 
the former are between the ascular bundles. 
the fibro 
Dr. Rusby will publish an account of the Annonaceae in a 
later issue of the Journal. 
HEsTER M. Rusk, 
Secretary of the Conference. 
NOTES, NEWS AND COMMENT 
ual Meeting and May Flower Show of the Horti- 
cultural Society of New York was held at ae museum building 
of the New York Botanical Garden on May 11-13. Numerous 
prizes were awarded to professionals and i. for exhibits 
of both cut flowers and plants. An especially beautiful fea- 
d 
oe according to the interpretor’s imagination, in beautiful 
ee colors of yellow, brown and purple. 
