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Use of arsenicals on the elm leaf-beetle.--C. E. Hood, of the 
Melrose Highlands, Mass., field laboratory, has summarized results | 
obtained during the past 2 years in spray experiments with Galeru- 
cella xanthomelaena Schr. and states that "where dosages of 25m 3, 4, 
and 5 pounds of lead arsenate to 100 gallons of water were used, it 
was found that 3 pounds to 100 gallons, plus fish oil as an adhesive, 
gave very good control. <A mixture of 4 pounds of lead arsenate to 
100 gallons of water, with no adhesive added, gave no better control 
than 3 pounds of lead arsenate to 100 gallons of water with fish oil 
adijed. Only the lower halves of some of the elm trees were treated, 
This was done to note the results which might be obtained in spraying 
tall trees with equipment not powerful enough to reach the upper parts 
of them. On all of these trees the upper half, or untreated portion, 
was later entirely defoliated, the lower half remaining in very good 
condition. Many of the larvae from the upper defoliated portion mi- 
grated to the lower treated area, but little feeding was done before 
they were killed by the poison. Although the upper area was entirely 
defoliated, the lower portion was well protected and considerable 
vitality was apparently retained for the tree by this: procedure, be- 
cause about 15 days after the upper portions of these trees were de 
foliated they had entirely refoliated. This was not true in the case 
of unsprayed trees that had been entirely defoliated during the year 
(amlp robably in previous years), and becouse of this fact had had 
their vitality seriously weakened," 
The beech scale in Germany.--W. F. Sellers of ae Budapest, 
Hungary, sv sublaboratory, has submitted information obtained in 1934 
concerning the occurrence of the beech scale (Cryptococcus fagi Baer.) 
in Germany, Valuable aid was given by Prof. Dr. Eidmann of the Zoolog- 
ical Institute der Forst. Hochschule, at Hann. Munden, and Prof. Dr. 
Rhumbler, who is the author of several papers on the scale, was also 
consulted. The information obtained should be of value in determin= 
ing where the insect may be Papac tec. to be able to persist in varying 
degrees of abundance in the United States. Mr. Sellers states that 
the beech scale occurs everywhere in Germany where beeches grow. It 
is found not only in the large beech forests on the shores of the North 
and East Seas, but also in the hills of central Germany. It is present 
at the highest altitudes (1,200 meters) where beech grows, as in the 
Schwarzwald, where it has been recorded as one of the highest occurring 
scale insects. From a study of records it is evident that the larger 
outbreaks have all occurred in northwestern Germany where the climate 
is of the oceanic type and the average rainfall between 70 and 90 cm, 
Hann. Munden is one of the places with the highest hills from which 
heavy infestations have been reported. In a recent outbreak the scale 
was abundant there at the highest altitudes (550 meters). 
