810 EXPERIMENT STATION RECOBD. [Vol.38 



are carefully selected by means of a proper screening system, by using the 

 largest chip for extraction compatible with maximum recovery of the oils and 

 rosin, and by avoiding, as far as possible, the burning of the chips in the pre- 

 liminary steaming for removal of turpentine and rosin." 



Sulphite turpentine, A. W. Schobgeb (Jour. Indus, and Engin. Chem., 10 

 {1918), No. 4, pp. 258-260). — Attention is called to the sulphite turpentine ob- 

 tained during the recovery of the sulphur dioxid in the manufacture of pulp 

 by the sulphite process and to its possible value as a source of toluene and of 

 cymene from which carvacrol can be prepared. The recovery of this oil is 

 from 0.36 to 1 gal. of turpentine per ton of pulp. Methods for identifying 

 cymene and for preparing carvacrol from cymene are described. 



Van Nostrand's chemical annual, edited by J. C. Olsen (2Vew York: D. 

 Van Nostrand Co., 1918, 4. ed., rev. and enl., pp. XVIII +778, pi. i).— In the 

 preparation of the fourth issue of this annual a very thorough revision of aU 

 tables has been made and about 48 new tables have been added. The section 

 on stoichiometry has been revised and explanations of the use of various tables 

 have been inserted throughout the volume. 



Charles Anthony Goessmann {Cambridge, Mass.: Corporation and Associate 

 Alumni Mass. Agr. Col., 1917, pp. [VII]+1S7, pis. 11; rev. in Jour. Amer. Chem. 

 Soc, 40 {1918), No. S, pp. 578-582). — Dr. Goessmann was associated with the 

 Massachusetts Agricultural College for nearly 40 years as professor of chemistry 

 and first director and chemist of the station (E. S. R., 18, p. 1101; 23, p. 401). 

 The book is not only a personal biography but a historical record of the chemical 

 and agricultural investigations conducted at the college and station during the 

 period of his service there from 1868 to 1907. The book contains also letters 

 from Frederick Wohler and an appendix consisting of a list of the published 

 writings of Dr. Goessmann and a chronolo.gy of his life. 



METEOROLOGY. 



Suggestions in regard to extending the area of spring wheat culture ( U. 8. 

 Dept. Agr., Nat. Weather and Crop Bui., No. 1 {1918), p. 3).— Briefly reviewing 

 a paper dealing with the northern and southern limits and optimum conditions 

 for spring-wheat culture in the United States " it is shown by means of com- 

 puting table and maps that there is a considerable area where the climatic con- 

 ditions appear to be favorable for spring wheat, but in which it has not been 

 tried at all or only in a small way. If it is possible to grow it, even as a catch 

 crop, when winter wheat has been winterkilled and when smaU quantities are 

 needed for local consumption it would contribute to increased supplies. Such 

 areas include certain sections of Pennsylvania, West Virginia, western Virginia, 

 and western Maryland when tillable land occurs above certain altitudes, as 

 above 600 ft. in northern to above 1,800 ft. in southern Pennsylvania, above 

 1,800 ft. in northern to above 3,000 ft. in central West Virginia, above 1,800 ft. 

 in western Maryland, and above 2,000 to 3,000 ft. in the mountains north of the 

 38th parallel of latitude in Virginia. . . . The time to sow, in an average sea- 

 son, will be between about the last of March to May 5, the earlier dates at the 

 lower and the later at the higher latitudes and levels in the States mentioned. 



" In addition to these higher altitudes where the conditions should be most 

 favorable for the growth of spring wheat as a catch crop or to increase the area 

 over that devoted to winter wheat, there is a far more extensive area similar in 

 climate to that of northern Illinois and eastern Iowa, Nebraska, and Kansas 

 where the reports show that spring wheat is sometimes grown as a regular or 

 catch crop. Such areas are found in northern and central Indiana and Ohio, 



