FUNGICIDES 385 



23. McCallan, S. E. A., and F. Wilcoxon, "The action of fungous spores on Bordeaux 



mixture," C. B. T. I., 8 : 151-165 (1936). 



24. , , "Laboratory comparisons of copper fungicides," C. B. T. I., 9 : 249-263 



(1938). 



25. , , "An analysis of factors causing variation in spore germination tests of 



fungicides. I. Methods of obtaining spores," C. B. T. I., 11(1939) : 5-20 (1940). 



26. , , "An analysis of factors causing variation in spore germination tests of 



fungicides. II. Methods of spraying," C. B. T. I., 11 : 309-324 (1940). 



27. Marsh, R. W., "Investigations on the fungicidal action of sulphur. III. Studies on 



the toxicity of sulphuretted hydrogen and on the interaction of sulphur with 

 fungi," /. Pomol. Hort. Sci., 7 : 237-250 (1929). 



28. Martin, H., "The scientific principles of plant protection with special reference to 



chemical control," 3rd ed., 385 pp., Edward Arnold & Co., London, 1940. 



29. Wellman, R. H., and S. E. A. McCallan, "An analysis of factors causing variation 



in spore germination tests of fungicides. IV. Time and temperature," C. B. T. I., 

 12 : 431-449 (1942). 



30. , , "Correlations wathin and between laboratory shde-germination, green- 

 house tomato foliage disease, and wheat smut methods of testing fungicides," 

 C. B. T. I., 13 : 143-169 (1943). 



31. , , "A system for classifying effectiveness of fungicides in exploratory tests," 



C. B. T. I., 13 : 171-176 (1943). 



32. , , "A greenhouse weathering technique for predicting field performance of 



fungicides," Phyiopath., 34 : 1014 (1944). 



33. Wilcoxon, F., and S. E. A. McCallan, "The fungicidal action of sulphur: I. The 



alleged role of pentathionic acid," Phytopath., 20:391-417 (1930); also in 

 C. B. T. I., 2 : 389-415 (1930). 



34. , , "The fungicidal action of sulphur. III. Physical factors affecting the 



efficiency of dusts," C. B. T. I., 3 : 509-528 (1931). 



35. , , "The fungicidal action of sulphur. IV. Comparative toxicity of sulphur, 



selenium, and tellurium," C. B. T. I., 4 : 415-424 (1932). 



36. , , "The stimulation of fungous spore germination by aqueous plant ex- 

 tracts," Phytopath., 24 : 20 (1934). 



37. , , "Fungicidal action of organic thiocyanates, resorcinol derivatives, and 



other organic compounds, C. B. T. I., 7 : 333-339 (1935). 



38. , , "The weathering of Bordeaux mixture," C. B. T. I., 9 : 149-159 (1938). 



39. , , "Theoretical principles underlying laboratory toxicity tests of fungi- 

 cides," C. B. T. I., 10 : 329-361 (1939). 



40. Young, H. C, "The toxic property of sulphur," Ann. Missouri Bot. Gard., 9 : 403- 



435 (1922). 



