Me 
FOREST INSECT INVESTIGATIONS 
F. C. Craighead, Entomologist, in Charge 
Dr. T, E, Snyder spent December 28 to 30 in New Haven, Conn,, 
where he gave an address on races or subspecies in Reticulitermes, 
at the Genetics Section of the Society of American Zoologists, On 
December 29 the new Peabody Museum was dedicated, - 
Dr, Alfred Emerson, of the University of Pittsburgh, and Dr. Harold 
Kirby, Jr., of Yale University, had informal discussions with Dr, Snyder 
on the biology of termites and the correlation of intestinal protozoa with 
the host termites, Preliminary results indicate that a study of the 
intestinal protozoa of certain termites will make practicable the specific 
determination of certain termites, evern from the immature stages of those 
termites, This method will be of great help in the determination of 
fragmentary material, and in ascertaining whether closely rvélated species 
of termites are distinct or not, There is also an indication of correlation 
in the phylogeny of the protozoa and that of their host termites, If 
this correlation exists it will confirm doubts now held by American students 
as to the classification of some of the lower termites, Data-on intes- 
tinal protozoa will also be extremely valuable in studying eccgrer aaa 
distribution and relationship. 
Dr. L. BR. Cleveland, now of Harvard University, and Prof. S. Pye 
Light, of the University of California, contributed to -these sessions 
by correspondence, It is greatly regretted that they could not also 
attend the meeting, 
The collection of tropical Woods at the Yale Forest School wags 
inspected by those in attendance at this meeting... 
William Middleton spent three days of early. December in Philedel- 
phia, Pa., and vicinity, reviewing control work on the box leaf miner 
already performed and planning some future work, The miner is a pest 
of considerable importance to boxwood, and a nursery firm in Philadelphia | 
is especially anxious to obtain an Becnon sal and satisfactory control 
of the insect that will be applicable during most, if not all, of the year, 
In cooperation with Floyd Smith, of the Bureau of Plant Industry, Pennsyl- 
vania State Department of Agriculture, who'is stationed’ at Willow Grove, 
Pa,, some fumigation work in tents has been started and some indoor or 
fumigation-box work is planned if a suitable box can be found or con- 
structed in the immediate neighborhood, | 
A review of the box leaf miner situation about Philadelphia, and 
more extensive observations in Washington, indicate that it is the most 
injurious of boxwood insects and that if boxwood is to continue to occtpy 
the important place it does in permanent decorative plantings, some sure 
and simple means of control must be found. From observations thus far 
made it seems that the miner can be controlled by spraying, but it’ also 
eppears difficult to reach a point in these operations where they can be 
laid aside, A further difficulty is that much of this spraying’ Work 
must be done during the late spring, When other nursery and gardening 
duties press for time. 
