348 EXPERIMENT STATION KECORD. 



In n pnpor entitled. Biological Notes on ilurgantia histrionica, R. I. Smith 

 presents the results of a study made of this pest (pp. 108-114). The egg-laying 

 habits, number of eggs deposited by different generations, incubation period, 

 number of generations annually, and length of life cycle are considered in detail. 



E. F. Phillips discusses Means whereby the Economic Entomologist can 

 Advance Apiculture (pp. 115-117), and B. N. Gates A Method of Securing 

 Apicultural Statistics (pp. 117-120). Types of Cages Found Useful in Parasite 

 Worlv, described by C. E. Hood (pp. 121-124), are accompanied by photographic 

 illustrations. In a paper on Tree. Crickets and Injury to Apple Wood, P. J. 

 Parrott presents observations and studies made of the habits of (Ecantlms 

 niveus and O. nigricornis in depositing their eggs in the bark of apple trees and 

 raspberry bushes (pp. 124-127). 



In considering The Distribution of San .Jose Scale in Iowa, H. E. Summers 

 states that the pest has been found doing injury in only 5 counties (pp. 127- 

 129). In discussing this paper, F. L. Washburn mentions the occurrence of the 

 pest at Madison, Wis,, and in South Dakota. A paper on The Self-Boiled Lime- 

 Sulphur Mixture as a Summer Treatment for the San Jose Scale by A, L. 

 Quaintance discusses the experiments that have been conducted under his 

 direction (pp, 130-135). The results indicate that while there is but little 

 immediate effect on the older scales, the crawling young and recently set 

 individuals are killed or fail to establish themselves owing to the presence of 

 the wash upon the trees. As a result, as the old insects die the scale gradually 

 disappears. 



In continuation of experiments previously noted (E. S. R., 20, p. 553), E. D. 

 Sanderson presents Notes on Recent Experiments for the Control of the Codling 

 Moth (pp. 135-142). The results of 3 yeai's' worl^ are said to show a necessity 

 for the most careful arrangement of plats and recording of data in order to 

 secure definite results. The (luestion. Is Arsenical Spraying Killing our Fruit 

 Trees, is considered at some length by E. D. Ball (pp. 142-148), who concludes 

 that the subject is a matter for careful and exhaustive investigation and that 

 any statements preceding such investigation should be of the most guarded 

 nature. 



E. G. Titus presents information upon The Alfalfa Leaf Weevil (pp. 148-154). 

 This insect {Pliytonomus murinus), which has long been known as a serious 

 pest of alfalfa in Europe, has been introduced into this country and is seriously 

 injuring alfalfa in Utah. Unfortunately the weevil is beginning to turn its 

 attention to sweet clover (MelUotns alba), yellow clover {M. officinalis), and 

 red clover (TrifoUum jrratensc) also. Its life history and habits are here 

 considered. 



An experiment in the control of curculio on peach is described by E. P. Taylor 

 (pp. 154-160), who considers the following points to be established: "The 

 increase of lead arsenate in the spray formula increases the danger of injury. 

 The addition of lime to lead arsenate for peach spraying reduces the danger of 

 injury. The use of lead arsenate as dilute as 2 lbs. per 50 gal. with the addition 

 of 4 lbs. of lime is not always safe for peach spraying. Early applications of 

 lead arsenate upon peach are less likely to cause injury than those of the same 

 formula applied later. Lead arsenate used upon peach should be practically 

 free from uncombined water soluble arsenic and should contain a maximum 

 amount of arsenious oxid." 



Under the title. Carbon Disulphid Fumigation for Grain Infesting Insects, 

 W. E. Hinds discusses the results obtained from preliminary experiments with 

 corn and cowpeas and the pests Calandra onjza, Silvanus surinamensis, and 

 Bruchus chinensis (pp. 161-1G8). A Summary of Fumigation and Dipping 



