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Department of Agriculture, and some of the costs have been de- 
frayed by it. Special funds have been received from Mr. Godfrey 
L. Cabot of Boston, and also Grants-in-Aid from the American 
Academy of Arts and Science, the National Research Council, and 
the National Academy of Sciences. The North-Eastern Forest 
Experiment Station and the Connecticut Experiment Station at 
New Haven have coéperated by lending trained technical assistants 
during the flowering season for making pollinations. 
The members of the Department of Plant Breeding, organized 
in September, 1913, with the appointment of Dr. Orland FE. White, 
have devoted practically all of their time to investigation. The 
genetic studies on peas, which were the most extensive, were con- 
ducted in order to obtain information concerning the factors for 

characteristics such as height, color and shape of the pod, seed- 
coat color pattern, foliage and flower color and their interrelation- 
ship, as well as the influence of environmental differences on the 
expression of these factors, and the relation between these factors 
and the chromosomes. More than 200 varieties of peas, assembled 
in collaboration with the Bureau of Plant Industry, United States 
Department of Agriculture, were used in these extensive experi- 
ments with a view to discovering the manner of inheritance of all 
the character differences of peas and, in large measure, this has 
been accomplished. 
The inheritance of endosperm color in maize, as well as various 
characters in castor beans, including stem color, bloom on the 
stems and fruit capsules, dehiscent and indehiscent seed pods, and 
seed coat colors, was investigated. 
Another line of investigation has been concerned with fasciation 
phenomena in plants, the study of certain floral abnormalities in 
Nicotiana having been made. Two papers have been published 
dealing with the cold resistance of certain plants, one dealing with 
the geographical distribution of some herbaceous, perennial, and 
woody plant groups, and the other with the mutation, adaptation 
to temperature differences, and geographical distribution in plants. 
Dr. White accompanied the Mulford Expedition for the Bio- 
logical Exploration of the Amazon Valley, June 1, 1921 to April 
14, 1922. The collections of the botanical members of the ex- 
pedition numbered about 13,000 specimens, representing over 2,000 
