ae . DIRECTOR’S REPORT OF THE 
sulphur wash before blossoming and two applications of a bor- 
deaux-arsenical mixture after blossoming reduced the scab 73.7 
per cent., and wormy apples (codling moth injury) 27.1 per cent., 
which are practically identical with the results obtained by the 
usual three applications of the bordeaux-arsenical mixture for 
the control of these two pests. 
In the experiments with pear trees in Orchard II, an applica- 
tion of a sulphur wash- before blossoming proved an efficient 
remedy for the pear blister mite (Hriophyes pyri Pyst.) Nal. 
Owing to the absence of pear scab no results were obtained as 
to the value of this treatment for this disease. For the same rea- 
son there were no data as to the effects of an early application 
of a sulphur wash upon brown rot. 
From the result's obtained in this season’s work it seems safe 
to conclude that one application of a sulphur wash during dor- 
mant season may be safely relied on to take the place of the 
usual treatment with the bordeaux mixture for the control of — 
apple scab and scale. <A system of spraying that seems well 
adapted for the treatment of scale-infested orchards for scale, 
scab and codling moth is one application of a sulphur wash 
during dormant season, followed with the usual second and third 
applications of the bordeaux-arsenical mixture. 
BULLETINS PUBLISHED DURING 1905. 
No. 261. January.—Some of the relations of casein and para- 
casein to bases and acids, and their application to 
cheddar cheese. L. L. Van Slyke and E. B. Hart. 
Pages 37. 
No. 262. January.—Sulphur washes for orchard treatment. II. 
P. J. Parrott, 8. A. Beach and F. A. Sirrine. Pages 
30, plates 4. 
No. 263. March.—The proteids of butter in relation to mottled 
butter. L. L. Van Slyke and E. B. Hart. Pages 25, 
plate 1. | | 
No. 264. March.—Potat'o spraying experiments in 1904. F. C. 
Stewart, H. J. Eustace and F. A. Sirrine. Pages 
110, plates 16, map 1. : 
