2 BULLETIN 899, U. S. DEPARTMENT OF AGRICULTURE. 
in banding 40,704 trees during that season and the next. The rau- 
penleim used in 1892 was very effectual, but much of the importation 
of the following year was inferior in quality and the results ob- 
tained were not so gratifying. Further use was made of this ma- 
terial, however, in a more limited way by the Massachusetts BoardOl 
of Agriculture until 1899. A further field test in barring gipsy 
moth caterpillars was given this material in 1909 from a sample 
which Dr. L. O. Howard, while in Europe, had shipped to the United 
States Bureau of Entomology at Boston, Mass. In 1912 Mr. L. H. 
Worthley, of this bureau, while making gipsy moth investigations in 
Europe, was impressed with the successful use of it abroad, and had 
a barrel of the material shipped to the bureau at Melrose Highlands, 
Mass. While the results from the former sample sent from Ger- 
many to the Bureau of Entomology did not meet the expectations of 
those testing it, general approval attended the results of the latter. 
During the winter of 1915, Mr. A. F. Burgess, in charge of moth ■ 
work for the Bureau of Entomology, sent samples of raupenleim to 
Dr. J. K. Haywood, chairman of the Federal Insecticide Board, 
Washington, D. C. These were turned over to Mr. C. C. McDonnell 
who arranged to have them analyzed and studied by Mr. E. L. Griffin, 
of the Insecticide Laboratory, with the idea of producing a like or 
similar compound. Several samples were made and sent to Melrose 
Highlands, Mass. These were tested and gave good results, con- 
sequently 4 tons of the material were made by the Insecticide Lab- 
oratory during the spring of 1916 and used in banding against the 
gipsy moth in New England during that season. The original 
formula and results secured during these experiments were pub- 
lished by Messrs. A. F. Burgess and E. L. Griffin. 1 Work by the * , 
writers in the preparation of this compound has resulted in certain 
changes in proportion and methods of mixing, which are described 
in the following pages. The product which gave the most satisfac- 
tory results is referred to under the name of " gipsy moth tree-banding 
material." The formula for making this product is on page 6. 
USES OF GIPSY MOTH TREE-BANDING MATERIAL. 
It has been the custom in the control work against the gipsy moth to 
band trees in heavy infestations along roadways, on lawns, and in 
dooryards where extensive migration of caterpillars is expected or 
where protection of valuable trees is especially desirable. Bands are ( 
now being used extensively at infestations in the border territory by 
Mr. H. L. Mclntyre of this bureau, who has charge of the scouting 
and extermination work. The infestations considered dangerous in 
1 Burgess, A. F., and Griffin, E. L. a new tree-banding material for the control 
of the gipsy moth. In Joura. Econ. Ent., v. 10, no. 1, p. 131-134, pi. 6-7. February, 
1917. 
