16 = BUL. 1199 (SUP. 1), U. S. DEPARTMENT OF AGRICULTURE. 
New York State Agricultural Experiment Station, Geneva. 
BULLETINS. 
484. The control of the pear thrips. C. R. Phipps. Jan., 1921. 
*485. Blister canker of apple and its control. W. O. Gloyer. Jan., 1921. 
486. The relation of the number of bacteria in milk to the quality and yield of cheese. 
G. J. Hucker. Jan., 1921. : 
*487. Plant lice injurious to apple orchards: III, The delayed dormant spray for the 
control of rosy and green apple aphids. F. Z. Hartzell and L. F. Strickland. 
Joss kPa be 
*488. Milking machines: VI, Leakage from the vacuum pipe line into the pail as a 
source of contamination of milk. R. 8S. Breed and J. W. Bright. Aug., 1921. 
489. Further studies on the efiect of missing hills in potato fields and on the variation 
in the yield of potato plants from halves of the same seed tuber. F. C. 
Stewart. Oct., 1921. 
*490. Control of apple red bugs by dusting. P. J. Parrott, Hugh Glasgow and G. F. 
McLeod. Nov., 1921. 
*491. Potato seed experiments, whole small tubers vs. pieces of large tubers of the 
same plant. FEF. C. Stewart. Jan., 1922. 
*492, Milking machines: VII, Further studies on methods of sterilization. A. H. Rob- 
i ertson, M. W. Finch and R. S. Breed. Mar., 1922. 
498. Changes in the composition and cost of fertilizers in New York from 1914 to 
£9215. i.  VaneSiyke. Mar:.. fy22: 
*494. Fermentation and preservation of manure: I, A study of certain bacteria in- 
volved in the ammonification of manure. H. J. Conn and R. C. Collison.— 
II, A study of certain preservatives and their effect on the fertilizing value 
of manure. R. C. Collison and H. J. Conn. May, 1922. 
495. The pear in New York. H.B. Tukey. Dec., 1922. 
TECHNICAL BULLETINS. 
81. An investigation of the seed of the silver maple (Acer saccharinum) : I, Analysis 
and composition of maple seed; II, occurrence of inosite hexaphosphoric acid 
in maple seed; III, acerin, the principal globulin in maple seed. R. J. Ander- 
son and W. L. Kulp. Jan., 1921. 
82. Types of flowers and intersexes in grapes with reference to fruit development. 
ALB stout. dan. vont. 
83. The use of various culture media in characterizing actinomycetes. H. J. Conn. 
ADE MO aie 
84. The use of agar slants in detecting-fermentation. H. J. Conn and G. J. Hucker.— 
Rose bengal as a general bacterial stain. H. J. Conn.—A modification and new 
application of the Gram stain. @G. J. Hucker. July, 1921. 
85. Composition of some soils from the Chautauqua County grape belt. R. C. Col- 
lison. Aug., 1921. 
86. The relation between bacterial counts from milk as obtained by microscopic and 
plate methods. A. H. Robertson. Sept., 1921. - 
87. The microscopic study of bacteria in cheese. G. J. Hucker. Oct., 1921. 
88. A study of the metabolism and respiratory exchange in poultry during vitamine 
starvation and polyneuritis. R. J. Anderson and W. L. Kulp. Feb., 1922. 
89. Review of the bacteriological aspects of cheese ripening. G. J. Hucker. Apr., 
1922. 
90. The types of bacteria found in commercial cheddar cheese. G. J. Hucker. Apr., 
1922. 
91. Methods of determining the number of micro-organisms in tomato products. C. A. 
Darling. Nov., 1922. 
HORTICULTURAL MONOGRAPH. 
The pears of New York. U. P. Hedrick, G. H. Howe, O. M. Taylor, E. H. Francis and 
H. B. Tukey. 1921. Published as New York Agr. Expt. Sta. Rpt. 1921, pt. 2. 
Nerth Carolina Agricultural Experiment Station, Raleigh. 
BULLETINS. 
242. The green June beetle, or fig eater. J. J. Davis and Philip Luginbill. May, 1921. 
Also appendix, published separately. 
* Bulleins marked with an asterisk (*) were issued in popular form with the same or 
modified titles. 
