150 GENETICS [BoT. Absts., Vol. VIII, 



1047. WHi>rE, David G. Standardization of lumber sizes and grades. Jour. Forestry 

 19: 34-35. 1921. — The American Lumber Congress is supporting a proposed change in the 

 manufacture of lumber. At the present time there is no standardization of grades in woods 

 or in building materials. It is proposed to reduce the number of grades of finish materials 

 and to unify the nomenclature of defects in structural woods. — E. N . Munns. 



1048. WiCKENDEN, H. R. A sketch on Swedish forestry from an American standpoint. 

 Jour. Forestry 18: 775-791. 1920. — A general description is given of the organization of the 

 Swedish forest service with some of its regulations and forest practices. The general sub- 

 ject of forestry in Sweden is very similar to that in America, though the former country has 

 proceeded much farther toward forest management. Rotation varies from 80 to 150 years, 

 depending upon climatic conditions, with clear cutting usually employed, except upon special 

 areas where protection is needed. In these situations a selection system is used. Thinnings 

 are made frequently but up to the present have been very slight, the tendency being toward 

 heavier thinnings, especially in the crown. Logging is done chiefly during times of snow and 

 the hauling is done by sleighs. The average saw log is between 14 and 19 feet long and from 

 7 to 9 inches in diameter. The logs are taken from the mill and driven down streams, which 

 have been very greatly improved. Forest planting is carried on extensively through sowing 

 in seed spots. Local seed has been proved superior to foreign seed. The tendency generally 

 is for a shorter rotation and for volume production rather than quality. A constant increase 



. in the price of limiber is expected at the rate of 2 per cent a year, — E. N. Munns. 



1049. WisLiCENUS, H. VON. Das pflanzenchemische Institut der Sachsischen Forstaka- 

 demie und forstlichen Versuchsanstalt zu Tharandt und die Pflege der Pflanzenchemie im 

 allgemeinen, der stofflichen Holzforschung im besonderen. [Plant chemistry institute and 

 forest experiment station at Tharandt, Saxony.] Tharander Forst. Jahrb. 71 : 90-106. 1920. — 

 An academic discussion of the place of plant chemistry in a forest school curriculum and a 

 consideration of the distinct fields covered by industrial research institutes and laboratories 

 connected with educational institutions. The urgent need for a fuller and better knowledge 

 of the chemistry of forest products was brought to full light during the war. Forest products 

 laboratories are a real and urgent need. Timber impregnation, seasoning of wood, and tur- 

 pentine yield are among the problems considered. — Joseph S. Illick. 



1050. WooDBRiDGE, R. G,, Jr, Nitrocellulose from wood pulp. Paper 26^ : 136-146, 1920. 



1051. WooLSEY, Theodore S., Jr. The development of a brush-disposal policy for the 

 yellow pine forests of the southwest. Jour, Forestry 19: 39^2, 1921.— Notes are made on 

 the brush-disposal policy in the southwest to the effect that brush burning is better than fire 

 lines, which are generally impracticable as desired in the district. Where possible these 

 lines should be located on ridges rather than in the canyons or on the slopes. — E. N. Munns. 



GENETICS 



G. H. Shxjll, Editor 

 J. P. Kelly, Assistant Editor 



(See also in this issue Entries 769, 789, 796, 808, 809, 815, 819, 896, 1137, 1141, 1145, 1161, 



1209, 1212, 1322, 1388, 1574) 



1052. Adkinson, June. The behavior of bronchial asthma as an inherited character. 

 Genetics 5:363-418, S9 fig. 1920. — In a study of 400 cases of bronchial asthma, author 

 found that 48 per cent gave a history of the occurrence of the disease in other members of the 

 family. Asthmatics found sensitive to the cutaneous tests, more frequently give a family 

 history positive for asthma than do the patients found non-sensitive to the cutaneous tests, 

 but such histories do not furnish conclusions as to the cause, severity, prognosis or treatment 

 in any given case. The tendency to haj^-fever, asthma or allied condition is transmitted, 



