450 P- Sydow: Pflanzenkrankheiten. [33 



479. Cook. M. T. Common diseases of beans,. (New Jersey Agr. 

 Exp. Stat. Circ. Nr. 50, 1915. 4 pp.) 



480. Cook, 31. T. The common diseases of the pear. (Circ. 

 Kew Jersey Agric. Exper. Stat. Nr. 52, 1915.) 



481. Cook. M. T. Common diseases of apples, pears and 

 quinces. (New .Jersey Agr. Exp. Stat. Circ. Nr. 44, 1915, 20 pp.. 18 fig.) 



482. Cook. M. T. Common diseases of the peach, plum and 

 cherry. (New Jersey Agr. Exp. Stat. Circ. Nr. 45, 1915, 16 pp.. 10 fig.) 



483. Cook, M. T. A Nectria parasitic on Norway maplo. (New 

 Jersey Stat. Eept. 1914, p. 504.) 



484. Crabill, C. H. The frog-eye leaf spot of apples. (Virginia 

 Agr. Exp. Stat. Bnll. Nr. 209, 1915. 16 pp., 5 fig.) 



485. Darueil-Smith, G. P. and Mackiiinon, E. Fungus nnd othei 

 diseases of the apple and pear.' (Depart. Agric. N. S. Woles, Farraer's 

 Bull. Nr. XCIX, 1915, 45 pp., 36 Fig.) 



486. Day, Leonard H. Apricot gummosis and sour sap-report 

 on observatioTis and inoculation experiments. (Monthly Bull. State 

 Com. Hort. California IV, Nr. 7. 1915. p. 330-332.) 



487. Ewart, A. J. On bitter pit and sensivity of apples to 

 poison. IV. (Proceed. Roy. Soc. Victoria, N. S. XXVII, 1915, p.' 342-349.) 



488. Faes, H. La maladie des abricotiers en Valais. (La terre 

 VaudoiseVII,1915,p.297— 299.)- Mon/7/a laxa. Siehe „Pilze" 1915, Ref. Nr. 130. 



490. Giddings, N. J. and Berg, A. Apple rust or cedar rust in 

 West Virginia. (Circ. 15. West Virgima Agric. Exi^er. Stat. 1915, p. 1-16.) 



491. Giddiugs, N. J. and Berg. A. Apple rust. (West Virginia Agr. 

 Exper. Stat. Bull. Nr. 154, 1915, 73 pp., 10 PI.) - Lebeusgoschichte von 

 Gymnospor angiiim Juni per i -vir ginianae. 



492. Heinricher, E. Zur Frage nach der assimilatorischen 

 Leistungsfähigkeit der Hexenbesen des Kirschbaumes.""' (Ber. 

 Deutsch. Bot. Ges. XXXIII, 1915. p. 245-253, 2 Fig.) - Siehe „Pilze" 1915, 

 Ref. Nr. 1285. 



493. Hesler. L. R. Apple cankers and their control. (Circular 

 Correll Univ. Agric. Exp. Stat. XXVITI, 1915, p. 17-28. 16 fig.) - Physalo- 

 spora Cydoniae, Bacillus amylovorus, Nectria ditissima, Nummiilaria discreta. 

 Olomerella cingulata, Myxosporium corticolum. 



494. Horue, W. T. Prevention of wood decay in fruit trees. 

 (Better Fruit IX, Nr. 4, 1915, p. 35-37.) 



495. Korne, A. S. The control of peach leaf curl. (Journ. roy. 

 Nat. Soc. London XLI, 1915, p. 110-114, 1 fig.) - Exoascus deformans. 



496. Howe, G. H. Effect of various dressings on pruning 

 loods of fruit trees. (New York State Agric. Exper. Stat. Bull. Nr. 396, 



w915, p. 83-94.) 



497. Jackson, Herbert Spencer. Brown rot of stone fruits. 

 (5th Ann. Rept. Proc. Oregon State Hort. Soc. 1913, ersch. 1914, p. 43-49.) 



498. Jackson. Herbert Spencer and Winston. J. R. Experiments for 

 control of apple sc ab. (Oregon Agric. Exper. Stat. Hood River Brauch 

 Rept. 1913/14. ersch. 1915, p. 6-17, 1 PI.) 



499. Jackson, Herbert Spencer and Winston, J. R. Miscellaneous 

 pathological projects. Preliminary Report. (Oregon Agric. Ex])er. 

 Stat. Hood River Brauch Rept. 1913/14, ersch. 1915, p. 19-24.) 



