252 GENETICS [BoT. Absts., Vol. X, 



1666. Severin, G. Un insecte nuisible au chene. [An insect injurious to oak.] Bull. 

 See. Centrale Forest. Belgique 23: 367-376, 408^15. Fig. 22-23. 1920.— The economic 

 aspects of the damage done by Kermes quercus is discussed. Several methods of combating 

 the insect are given, but none holds out much promise. The insect being little known, there 

 is some confusion regarding classification. The author feels justified in retaining the name 

 Kermes queixus. — W. C. Lowdermilk. 



1667. SiECKE, E. 0., and L. Wyman. Tree planting by farmers for fuel, fence posts and 

 shelter. Texas Agric. Exp. Sta. Forest. Bull. 13. 24- p., 10 fig. 1920. — The treeless area of 

 the state is the Panhandle, west Texas, below the caprock, and the Trans-Pecos country. 

 This was the cattle country but dry farming has replaced cattle raising. Protection from 

 sand storms and drying winds may be partially secured by planting trees, about 6 rows making 

 an effective windbreak. The scarcity of fuel and fence posts makes a grove of trees desirable 

 on every farm in this area. The species suited to different localities, the question of seedlings 

 and transplanted stocks, renewals of windbreaks and woodlots, spacing, cultivation, and 

 cost are briefly discussed. — L. Pace. 



1668. Sim, T. R. Tree planting for the farm II. South African Jour. Indust. 4: 472- 

 478. 1921. — In this installment directions are given for preparation of the land, raising of 

 seed, planting out, and sowing in situ. — E. M. Doidge, 



1669. Sim, T. R. Tree-planting for the farm III. South African Jour. Indust. 4: 554- 

 562, 666-672. 1921. — The financial aspect of tree-planting is considered, and directions given 

 for cultivation and thinning. Trees suitable for planting in Various districts are listed, and 

 the merits of various species for commercial planting are discussed. — E. M. Doidge. 



1670. Warner, H. H. The size of yew trees. Garden 85: 156, 205. Illus. 1921.— This 

 contains 2 notes on venerable trees and their dimensions, data for the 1st being taken largely 

 from The Yew Trees of Great Britain and Ireland, by Dr. John Lowe, The 2nd gives some 

 additions and corrections of measurements and an illustration of the yew by Iffley Church 

 near Oxford. This, according to tradition, is as old as the church, which was built in 1175. — 

 M. F. Warner. 



GENETICS 



George H. Shull, Editor 

 J. P. Kelly, Assistant Editor 



(See also in this issue Entries 1448, 1463, 1477, 1478, 1479, 1480, 1488, 1515, 1523, 1545, 1642, 

 1753, 1757, 1762, 1776, 1787, 1789, 1790, 1822, 1839, 1918, 1963, 2047) 



1671. Anonymous. Increasing yields by bud selection. Agric. Gaz. New South Wales 

 32: 698. 1921. — This consists essentially of quotations from an article by E. B. Babcock of 

 California, warning against too much optimism in bud selection in deciduous fruits. — L. R. 

 Waldron. 



1672. Anonymous. Measuring intelligence. Jour. Heredity 11: 86-87. 1 fig. 1920. — 

 This is a report of the findings of the Committee on Army Mental Tests of the American 

 Psychological Association and National Research Council. Test ratings furnished a fairly 

 reliable index to ability to learn, think quickly and accurately, analyze a situation, maintain 

 a state of mental alertness, comprehend and follow instructions. Test score was little affected 

 by schooling. There was no proof that men of equal mental rating were of equal military 

 worth. Temperamental qualities could not be measured, yet a superior degree of loyalty, 

 bravery, and leadership was more often correlated with superior intelligence than otherwise. 

 Intelligence rating was found to be one of the most important aids in selecting men for spe- 

 cialized tasks, and corresponded closely to pre-army occupational levels, i.e.: (1) Lowest 



