838 EXPERIMENT STATION EECOED. 



inate. It is not, however, possible to delimit the groups definitely, or to group 

 all the plants by a mere taxonomic study. 



As a result of cultural experiments the author concludes that pure strains 

 which breed true to type can be selected and that such strains do not break up 

 into new types when grown in northern climates. After modifications appear, 

 they appear in all plants of a strain alike. Notes are given on a number of 

 types of the macrophyUa and havanensis groups. 



Field experiments with wheat, F. Ditzell (Agr. Gaz, N. 8. Wales, 23 

 (1D12), No. 1, pp. 13-22). — These pages record the results of fertilizer tests with 

 wheat at the Cowra Experiment Farm during the 4-year period 1907-1910. 

 Applications of sulphate of ammonia, superphosphate, and sulphate of potash 

 singly and in various mixtures and amounts were tested on plats (1) planted 

 continuously to wheat, (2) after bare fallow, and (3) planted to wheat after a 

 fodder crop. The work along each of these lines was further subdivided to 

 include tests of the effect upon the yielding power of the land of methods of 

 harvesting the crop. 



On the land planted to wheat each year, burning the straw, plowing it under, 

 and removing it with a binder were followed by average yields of 22.78, 20.88, 

 and 19.27 bu. per acre, respectively, as compared with 28.07, 27.66, and 27.07 bu. 

 per acre, respectively, were planted in alternation with bare fallow, and 28.72 

 27.97, and 27.97 when wheat was planted in alternation with fodder crops. 

 Tables state in full the numerical data from these tests, grouped to bring out a 

 number of different comparisons. 



Wheat manurial trial, Cowra Experiment Farm, 1910, F. Ditzell (Agr. 

 Gaz. N. S. Wales, 23 (1911), No. 11, pp. 922-925).— In a fertilizer test with 

 wheat the applications used, in the order of their merit, -were (1) superphos- 

 phate, (2) dried blood, (3) sulphate of potash. (4) dried blood and superphos- 

 phate, (5) sulphate of ammonia, superphosphate, and sulphate of potash, (6) 

 superphosphate and sulphate of potash, (7) dried blood, superphosphate, and 

 sulphate of potash, and (8) dried blood and sulphate of potash. 



Development of wheat production in Canada, A. L. Bishop (Bui. Amer. 

 Geogr. Soc, H (1912), No. 1, p. 10-17). — These pages trace the development of 

 wheat growing in Canada since 1871, each province being treated separately. 

 A table states the wheat yields and the number of acres devoted to wheat in 

 Manitoba, Saskatchewan, and Alberta in 1900 and each year during the period 

 1906-1910, and the acreage for 1911. Estimates of the possible future extension 

 of the wheat acreage in Canada are given. 



The wheat varieties of Alsace-Lorraine and neig'hboring countries, E. H. L. 

 Krause (Landw. Jahrb., 41 (1911), No. 3-J,, pp. 337-371, fig. i).— The author 

 states briefly the principal characters and the history of each of 13 wheat 

 varieties. There is a separate bibliography for each variety, and numerous 

 foot notes give citations to the sources of information summarized. 



Seed inspection (Maine Sta. Off. Insp. 3&, pp. 12). — The chief requirements of 

 the law regulating the sale of seeds in Maine are stated, and the results of 

 the 1911 inspection are reported much as in earlier years (E. S. R., 22, p. 638; 

 24, p. 640). 



" There has been a very remarkable improvement in the quality of grass seed 

 which is handled, and there were practically no violations of the law in this 

 State in 1911." 



Small seed improvement, G. M. Friee and Lovina S. Merick (Indiana Sta. 

 Circ. 31, pp. 15, figs. 5). — This circular describes the work of the branch seed 

 laboratory of the extension department and reports results to July 1, 1911. 



From analyses of 2 samples each of high and low grade red clover, alfalfa, 

 and timothy seed it appeared that the average cost per bushel of pure seed 



