Work in the world of science
QUEEN SUBSTANCE by C. G. Butler
Rothamsted Experimental Station and R. K. Callow , F.R.S. National Institute for Medical Research
Dr. Butler and Dr. Callow describe the investigations that led to the discovery and identification of this remarkable substance. On it depends the regular social life of the hive; when supplies begin to fail, the worker bees change their pattern of behaviour in such a way that new supplies are forthcoming.