69| Obstbau. 495 



905. Crow, J. W, Report of the professor of pomologie. (Ann. 

 Rpt. Ontario Agr. Col. and Expt. Farm, 1910, XXXVI, p. 142.) 



Exp. Stat. Rec, 1911. XXV, p. 536. 



906. Davis, V. H, Natural Variation of the apple as a factor in 

 the perpetuation and improvement of varieties. (Ohio State Hort. 

 Soc. Ann. Rpt., 1910, XLIII, p. 40.) 



Exp. Stat. Rec, 1911, XXIV, p. 241. 



907. Dickens, A. and Headlee, T. J. Spraying the apple orchard. 

 (Kansas Sta. Bull. 174, 253 pp.) 



Exp. Stat. Rec, 1911, XXV, p. 137. 



908. Eustace, H. J. and Pettit, R. H. Spray and practica outline for 

 fruit growers. (Michigan Sta. Spec. Bull. 54, 20 pp.) 



Exp. Stat. Rec, 1911, XXV, p. 137. 



909. Ewert, R. Die Widerstandsfähigkeit der einzelnen Organe 

 der Obstblüte, insbesondere des Blütenpollens gegen Frost. (Zeit- 

 schrift f. Pflanzenkrankh., 1910, p. 65.) 



B. C, 1911, p. 404. 



910. Favor, H. B. The fruit growers' guidebook. (St. Joseph, Mo. 

 1911, 285 pp.) 



Exp. Stat. Rec, 1911, XXV, p. 136. 



911. Fletclier, S. W. Varieties of fruit originated in Michigan. 

 (Michigan Sta. Spec Bull. 44, p. 3.) 



Exp. Stat. Rec, 1911, XXIV, p. 240. 



912. O'Gara, P. J. Frost prevention work in the Rogne River 

 Valley, Oreg., during the spring of 1910. (Mo. Weather Rev., 1910, 

 XXXVIII, No. 9, p. 1437.) 



Exp. Stat. Rec, 1910, XXIV, p. 342. 



913. Gardner, C F. ßreeding everbearing strawberries. (Nat. 

 Hort, 1911, III, No. 6, p. 9—10.) 



Exp. Stat. Rec, 1911, XXV, p. 40. 



914. Georgeson, C. C Horticultural investigations in Alaska. 

 (Alaska Stas. Rpt., 1910, p. 10.) 



Exp. Stat. Rec, 1911, XXV, p. 8.36. 



915. Gillette, C. P. and Weldon, George P. Two Plant Lice of the 

 Peach. (Agric. Exp. Stat. Colorado Agric College, Bull. No. 169, 1910, p. 13 

 bis 20, Fig. 4.) 



916. Glasenapj), S. The effects of planting distances on the 

 yield of apple trees. (Trudui Byuro Prikl. Bot., 1910, III, No. 7, p. 275.) 



Exp. Stat. Rec, 1911, XXiV, p. 149. 



917. Gossard, H. A. Commercial apple orcharding in Ohio. (Ohio 

 Sta. Circ 112, p. 3 ) 



Exp. Stat. Rec, 1911, XXV, p. 540. 



918. Gould, H. P. Summer apples in the Middle Atlantic States, 

 (ü. S. Dept. Agr., Bur. Plant Indust. Bull. 194, 96 pp.) 



Exp. Stat. Rec, 1911, XXV, p. 441. 



919. Gran, H. H. Bringebaersorter. (Himbeersorten,) (Norsk 

 havetidende, 1911, Heft 10, Kristiania 1911, p. 259-278, 6 Textfig.) 



Verf. behandelt zuerst die Eigenschaften, die man von den kultivierten 

 Sorten verlangt. Dann folgt ein analytischer Clavus fär 18 Kulturformen, 

 die er unweit Kristiania kviltiviert hat. Zuletzt historische und morphologische 



