442 MANUAL OF FRUIT DISEASES 
the wind, but here the light particles floating slowly through 
the branches settle and coat every part. Dusting is to be done 
at the same times that spraying should be done. However, 
since it can be done much more rapidly, the grower may often 
be able to make a timely application of dust which would not 
be possible with spray. 
REFERENCES 
(Departments of Entomology and Plant Pathology.) The control of 
insect pests and plant diseases. Cornell Univ. Agr. Exp. Sta. Bul. 
283 : 463-500. Revised June, 1915. 
Blodgett, F. M. Experiments in the dusting and spraying of apples. 
Cornell Univ. Agr. Exp. Sta. Bul. 340: 145-179. 1914. 
Reddick, D., and Crosby, C. R. Further experiments in the dusting 
and spraying of apples. Cornell Univ. Agr. Exp. Sta. Bul. 354: 
49-96. 1915. 
Reddick, D., and Crosby, C. R. Dusting and spraying experiments 
with apples. Cornell Univ. Agr. Exp. Sta. Bul. 369: 305-356. 
1916. 
Parrott, P. J., and Schoene, W. J. Experiments with home-made 
concentrated lime-sulfur mixtures. New York (Geneva) Agr. 
Exp. Sta. Bul. 330 : 449-484. 1910. 
Van Slyke, L. L., and others. Chemical investigations of best condi- 
tions for making the lime-sulfur wash. New York (Geneva) 
Agr. Exp. Sta. Bul. 329: 403-449. 1910. 
Hedrick, U. P. Bordeaux injury. New York (Geneva) Agr. Exp. 
Sta. Bul. 287: 103-189. 1907. 
Wallace, E., Blodgett, F. M., and Hesler, L. R. Studies of the fungi- 
cidal value of lime-sulfur preparations. Cornell Univ. Agr. Exp. 
Sta. Bul. 290: 163-207. 1911. 
Wallace, Errett. Lime-sulfurasasummer spray. Cornell Univ. Agr. 
Exp. Sta. Bul. 288: 101-137. 1910. 
Butler, O.. Notes on the preparation of bordeaux mixture. New 
.« Hampshire Agr. Exp. Sta. Cire. 15:1-10. 1914. 
Brooks, Chas. Fungicides in the apple orchard. New Hampshire 
Agr. Exp. Sta. Bul. 161:1-16. 1912. 
Morse, W. J. Six years of experimental apple spraying at Highmoor 
Farm. Maine Agr. Exp. Sta. Bul. 249: 79-96. 1916. 
Waite, M. B. Experiments on the apple with some new and little 
known fungicides. U.S. Agr. Dept. Pl. Ind. Bur. Circ. 58 : 1-19. 
1910. 
Lutman, B..F. The covering power of the precipitation membranes of 
bordeaux mixture. Phytopath. 2: 32-41. 1912. 
