252 EXPEKIMENT STATION EECOKD. 



pointed out that as soon as irrigation ceases and tliere is a great increase in 

 the amount of river water entering the constant flow steadily drains the flats 

 and removes the stagnant water. As a result the mortality ceases almost at 

 once. Fresh water is the only remedial measure yet discovered. 



Some data on the effect of temperature and moisture on the rate of insect 

 metabolism, T. J. Headlee (Jour. Econ. Ent., 7 (lOU), No. 6, pp. ^13-417).— 

 The author finds that the rate of metabolism in certain actively feeding insects 

 with an abundant supply of succulent food is not afCected by large differences 

 in atmospheric moisture. 



On the valuation of lime-sulphur as an insecticide, H. V. Tartae {Jour. 

 Econ. Ent., 7 {WUf), No. 6, pp. 463-Jf67). — It is stated that the work done by 

 the department of entomology of the Oregon Experiment Station indicates 

 clearly that the calcium polysulphids are the principal insecticidal constituents 

 of lime-sulphur. Experimental work carried on at the laboratory indicates 

 that if hydrogen sulphid is liberated under normal conditions it is in very 

 small quantity and evidently is not an important factor to consider. 



Insecticide formulas, C. W. Woodwobth (California Sta. Circ. 128 (1915), 

 pp. 7). — Formulas for the preparation of various insecticides are giA'en in the 

 order of their importance in California. 



Twenty-ninth report of the state entomologist, 1913, E. P. Felt (Univ. 

 State N. Y. Bill. 589 (1915), pp. 257, pis. 16, figs. 36). — Under the heading of 

 Injurious Insects (pp. 13—44) the author briefly reports upon control work 

 with the codling moth during the year in continuation of that of the preced- 

 ing four years (E. S. R., 30, p. 656), and gives brief accounts of the lined 

 corn borer (Hadena fractilinea), which was the source of injury to corn 

 through boring into the heart and killing the stalks in Ulster County; the 

 European grain moth or wolf moth (Tinea granella), an important cereal pest 

 discovered in a seed warehouse at Albany, where it had nearly destroyed 

 hundreds of bushels of sweet corn; Sesia rliododendri, said to be generally 

 distributed in New York Zoological Park and common in and about Prospect 

 Park, Brooklyn, and also recorded from Cheltenham, Pa.; the azalea leaf 

 skeletonizer (Gracilaria azalew) which injured azaleas in greenhouses at 

 Yonkers and Rochester; the arbor vitae leaf miner (Argyresthia tJiuieUa) 

 which was abundant at Westbury ; white grubs and June beetles; the spotted 

 hemlock borer (Melanophila fulvoguttata) which caused the death of hemlock 

 in the Kew York Botanical Garden; the white pine weevil (Pissodes strobi), 

 which is widely distributed; the hickory bark borer (Eccoptogastcr qimdri- 

 spinosa) ; the pitted ambrosia beetle (Cortli\flns piinctatisstmus), which in- 

 jured rhododendrons at Irvingtou and Tarry town; the cactus midge (Itonida 

 opuntiw) ; and the banded grape bug (Paracalocoris scrupeus), a pest of 

 grapes which is increasing in numbers in western New York and damages 

 grapes in the Niagara district. 



In a brief discussion of the use of miscible oils on trees (pp. 45-47), the 

 author states that the data at hand abundantly justify a refusal to recommend 

 these materials as applications to dormant sugar maples and warrant the 

 employment of caution in their use in a similar way for other trees. 



Under the heading of Notes for the Year (pp. 4S-G7), accounts are given of 

 the occurrence of a number of important insects, including Aspidiotus oshorni, 

 not previously recorded from the State, and Pulvinaria acericola, two rare 

 scales, which were found during the past season, the former at Scarborough 

 and the latter at Tarrytown. Fruit-tree pests noted are the apple tent cater- 

 pillar, plum curcuho, pear thrips, false red bug (Lygidea mendax), pear 

 psylla, plant lice, San Jos6 scale, and the variegated cutworm (Agrotis saucia). 



