138 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1948 
The single sexual brood of 2,000 to 3,000 males and a dozen or less 
queen-type individuals is somehow produced by a functional queen 
which otherwise delivers huge all-worker broods at regular intervals 
throughout the year. 
Facts concerning queen production in F'citon were checked in the 
study of a number of colonies. It was found that the number of young 
queens matured was very small, as a rule less than a dozen. They are 
fully developed in advance of the males, usually about 3 days. This 
female precocity proves to be very important for the process of colony 
division. Since young queens are present as adults before the males 
begin to emerge from their cases, it is possible for subsectioning of 
the colony to occur on a chemical-attraction basis before emergence of 
males arouses the colony into a move from its statary bivouacking 
site. The old colony queen is apt to be present in one of the subsections 
which becomes a new colony, one of the young new queens in another; 
these move off divergently and thenceforth behave as new colonies. 
The other young queens, through an interesting behavior process in 
the worker, are “sealed off” and eventually abandoned. 
Dr. R. A. Johnson, State Teachers College, Oneonta, N. Y., came to 
the island when Dr. Schneirla and his associates were studying their 
army ants; hence it was a splendid opportunity for him to study the 
birds that attend the swarm raids of these ants, their various types of 
adjustment to habitat, territorialism, and social stimulation. In ad- 
dition to the ant birds proper (Formicariidae), birds of other groups 
were found associated with these ant swarms. These associations dif- 
fer distinctively, although all are represented by species of the 
Formicariidae. 
Mrs. Dorothy Hobson, vice president of the Indiana Audubon So- 
ciety, spent 2 months studying primarily the birds of the island, their 
nesting habits, and general behavior. She added much valuable in- 
formation which will appear soon in published form. 
Miss Clara Alma Moore, of Indianapolis, Ind., acompanied Mrs. 
Hobson and devoted most of her time to painting the birds in their 
natural habitats, nestings, and also some of the more conspicuous 
flowers. In addition she also made studies of nesting habits of birds. 
Fred E. Moorehouse and Don F. Loughnan, of the Forest Products 
Laboratory of the United States Department of Agriculture at Madi- 
son, Wis., made careful inspection of the various types of container- 
grade plywood which have been in test on the island for several years. 
This also included cleated-plywood boxes. The tests were made to 
determine the effectiveness of various glues, glue preservatives, and 
toxic water-repellent treatments on the maintenance of quality of con- 
tainer-grade plywood when exposed to tropical conditions. The in- 
formation obtained provides data desired by the Air Forces, as well 
