650 EXPERIMENT STATION RECORD. 



available against tlie wood Jeopard niotli appears to be cutting down 

 and burning all infested trees and brauches, or pouring a, few drops of 

 bisulphid in the burrows and closing the opening with putty. It is 

 recommended that the egg masses of the tussock moth be removed 

 from the trees during the winter and burned, and that the caterpillars 

 be spraj^cd in June with some one of the arsenites. 



General remarks on protecting shade trees from insect attacks are 

 given, and a list of 21 shade trees, in the order of least susceptibility 

 to insect injuries. 



Insect Life ( U. 8. Depi. Agr., Division of Entomolof/y, Insect Life, vol. 

 VII, No. 2, pp. 55-215, fig.l). — This number is devoted to the proceedings 

 and papers of the sixth annual meeting of the Association of Economic 

 Entomologists, which met at Brooklyn, Kew York, August 14 and 15, 

 1894. 



Brief account of the rise and present condition of economic entomology, 

 L. 0. Howard (pp. 55-107). — This paper consists of a historical sketch 

 of economic entomology from tUe Middle Ages to the present time, giv- 

 ing in detail the growth and extent of this science in the United States, 

 Canada, Great Britain, Germany, Austria- Hungary, Italy, France 

 Spain, the ^Netherlands, Norway, Sweden, Russia, Finland, South 

 America, India, South Africa, Australia, the West Indies, ISTew Zea- 

 land, and Hawaii. The scope and value of the work in the different 

 countries is treated at length and the various investigators mentioned. 

 The entomological work of the experiment stations is reviewed and a 

 bibliographical list of their publications given. 



Bisulphid of carbon as an insecticide, J. B. Smith (pp. 108-110). — An 

 account of experiments with this chemical against melon lice, a dram 

 of the liquid being jjlaced in a saucer or small tumbler by each hill 

 and the whole covered with a large wooden bowl. This was left undis- 

 turbed for an hour, when upon examination all the aphides were found 

 to be killed. In the ensuing discussion the method was spoken of by 

 several members favorably and modifi(;ations suggested. 



Report of committee on cooperation among station entomologists, J. B. 

 Smith (pj). 112-114). — Eec.ommendations of lines of work in which ento- 

 mologists may assist one another, notably in the study of life histories 

 and geographical distribution, and the testing of insecticides. 



Spraying uHthout a pump, J. M. Aldrich (pp. 114, 115). — A preliminary 

 note on an apparatus for mixing kerosene with water at the instant of 

 passing through the nozzle, thereby doing away with the necessity of 

 making kerosene emulsion. 



Notes on insecticides, G. L. Marlatt (pp. 115-126). — General remarks 

 on the scientific use of insecticides and notes on experiments with 

 applications of standard insecticides, new insecticides, and modifica- 

 tions of old ones. The new peach scale [Diaspis linatus) and the 

 euonymus scale {Chionaspis euonymi) were the species against which 

 most of the experiments were directed, and kerosene emulsion proved 



