MAKKET DISEASES OF APPLES, PEARS, QUINCES 61 



(41) Childs, L. 



1929. THE EELATION OF WOOLLY APPLE APHIS TO PERENNIAL CANKP]Tl 

 INFECTION WITH OTHER NOTES ON THE DISEASE. Ol'eg. Agr. Expt. 



Sta. Bul. 243, 31 p., illus. 



(42) CUNTON, G. P. 



1920. DOWNY MILDEW EOT, PHYTOPHTHOBA CACTORUM (COHN & LEB.) 



scHROET. Conn. (New Haven) Agr. Expt. Sta. Bul. 222:406- 

 407, 454-457. 



(43) Colby, A. S. 



1920. SOOTY BLOTCH OF POMACEOus FRUITS. 111. State Acad. Sci. Trans. 

 13 : 139-175, illus. 



(44) COOLEY, J. S. 



1932, BOTRYTis STEM INFECTION IN PEARS. Ptiytopatliology 22 : 269-270. 



(45) and Crenshaw, J. H. 



1931. control of BOTRYTIS EOT OF PEARS WITH CHEMICALLY TREATED 



WRAPPERS. U.S. Dept. Agr. Circ. 177, 10 p., illus. 



(46) and Fenner, E. A. 



1926. the variability in the black eot fungus of the apple. Phyto- 

 pathology 16: 41^6. illus. 



(47) Craig, J., and Van Hook, J. M. 



1902. PINK ROT, AN ATTENDANT OF APPLE SCAB. N. Y. (Comell) AgT. 



Expt. Sta. Bul. 207, p. [161]-171, illus. 



(48) Daly, P. M. 



1925. the RELATION OF MATURITY TO JONATHAN BREAKDOWN. Amer. 



Soc. Hort. Sci. Proc. (1924) 21: 286-291. 



(49) Davis, L. D., and Tufts, W. P. 



1932. BLACK-END AND ITS OCCURRENCE IN SELECTED PEAR ORCHARDS. 



Amer. Soc. Hort. Sci. Proc. (1931) 28:634-638, illus. 



(50) DiEHL. H. C, Fisher, D. F., Haetman, H., Magness, J. R., and Robinson. 



R. H. 



1929. REMOVAL OF SPRAY EEISIDUE FROM APPLES AND PEARS IN THE PACIFIC 



NORTHWEST, U.S. Dcpt, Agr. Circ 59, 20 p. 



(51) LuTz, J. M., and Ryall. A. L. 



1931. EEMOVING SPRAY RESIDUE FROM APPLES AND PEARS. U.S. Dcpt. Agr. 



Farmers' Bul. 1687, 32 p., illus. 



(52) and Wright, R. C. 



1924. FEEOEziNG iNJUEY OF APPLES. JouT. Agr. Research 29: 99-127, 



illus. 



(53) DoEAN, W. L. 



1925. EXPERIMENTS ON THE) CONTROL OF APPLE SCAB AND BLACK ROT AND 



SPBAY INJURY IN 1924. Mass. Agr. Expt. Sta. Bul. 222, [10] p. 



(54) and Osmun, A. V. 



1924. COMBATING APPLE SCAB. SPRAYING AND DUSTING EXPERIMENT'S IN 

 1923 WITH SUMMARY OF THREE YEARS' RESULTS. MaSS. Agr. 



Expt. Sta. Bul. 219, 17 p. 



(55) DuTTON, W. C. 



1930. SPRAYING MATEUIALS AND THE CONTROL OF APPLE SCABl. Mich. 



Agr. Expt. sta. Spec. Bul. 203, 32 p. 



(56) 



1932. SPRAY INJURY STUDIES. I. INJURIES FROM SUMMEIR APPLICATIONS 



ON APPLES. Mich. Agr. Expt, Sta. Spec. Bul. 218, 68 p,, illus. 



(57) Eustace, H. J. 



1902. A destructi\t: apple eot following scab. N.Y. State Agr. Expt. 

 Sta. Bul. 227, p. 367-389. illus. 



(58) 



(59) 



1903. TWO DECAYS OF STORED APPLES. N.Y. State Agr. Expt. sta. Bul. 

 235, p. 123-131, illus. 



1908. IN\'ESTIGATI0NS of some fruit diseases. I. APPLE EOTS in COLD 



storage ; II. PEACH EOT IN COLD STOEAGE ; HI. SULPHUR FUMIGA- 

 TION TO DESTROY APPLE ROT FUNGI; IV. APPLE INJURY BY SUL- 

 PHUR FUMIGATION ; V. ENLARGEMENT OF APPLE SCAB SPOTS UNDER 



A COVERING OF BORDEAUX MIXTURE, N.Y. State Agr. Expt. Sta. 

 Bul. 297, p. [31]-48, illus. 

 (60) and Beach, S. A. 



1909, COLD STORAGE FOE IOWA GEOWN APPLES. lOWE Agr. Expt. Sta. Bul. 



108, p. [3931-414. 



