April, ’23] 
NOLAN: TWO-YEAR BROOD CURVE 
117 
perimental, and we limit out distribution to three queens to a beekeeper, 
they do not object. 
Mr. Goldfarb : How much do you pay your inspectors ? 
Chairman M. C. Tanquary: The one who has general charge of the 
field work receives at the present time $2100 per year and expenses while 
in the field. He has been with us for several years now. The other we 
usually start in at $1200 per year, and if he stays with us over that period, 
increase it as we can. The one mentioned as having general charge of 
the field work does other work than that of an inspector during about 
two or three months of the year. 
Chairman Tanquary resumed the chair. 
Chairman M. C. Tanquary: The next paper on the program is 
UTILIZATION OF VARIOUS CARBOHYDRATES AS FOOD 
FOR THE HONEY-BEE 
By E. F. Phillips, Washington, D. C. 
(Withdrawn for publication elsewhere) 
Mr. R. N. Chapman: Do you know anything about the energy 
efficiency of a bee? How efficiently is it built up? 
Mr. E. F. Phillips: You mean in muscular activity? 
Mr. R. N. Chapman: How much of it goes to muscular activity, in 
reproduction, and so on? 
Mr. E. F. Phillips : The only work which would answer that, is the 
work of Milner and Demuth, and their measured heat production agreed 
closely with the calories in the food consumed. 
Mr. L. Haseman: I would like to ask whether diastases have been 
discovered in the alimentary canals of bees, as such. 
Mr. E. F. Phillips : There are no examinations for any of the enzymes 
on the inside of the alimentary tract. They have all been made by 
taking the entire tract, the muscles and all adhering. There are no 
examinations of extracts from the juices which are contained inside the 
alimentary tract. 
Chairman M. C. Tanquary: The next paper is by W. J. Nolan. 
A TWO-YEAR BROOD CURVE FOR A SINGLE COLONY OF BEES 
By W.J. Nolan, Bureau of Entomology 
Abstract 
The earlier work is briefly reviewed. Investigations were begun in 1920, weekly 
counts being made, but during 1921 and 1922 photographic records were taken, sea- 
