14 BUL. 1199 (SUP. 3), IT. S. DEPT. OF AGRICULTURE 
TECHNICAL BULLETINS 
67. Investigations on the blackleg disease of potato. J. E. Kotila and G. H. Coons. 
May, 1925. 
68. Bacterium pullorum studies : I, Variations in cultural, physiological and morphologi- 
cal characteristics ; II, a study of agglutinability of 47 strains ; III, keeping 
quality of Bacterium pullorum antigen. W. L. Mallmann. Oct., 1925. 
69. The fruiting habits and pruning of the Concord grape. N. L. Partridge. Oct., 1925. 
70. Tbe nutrient requirements of the strawberry. R. E. Loree. Oct., 1925. 
71. Growth of lettuce as influenced by reaction of culture medium. J. W. Crist. Oct., 
1925. 
.72. Potato spraying and dusting experiments in Michigan. J. E. Kotila and G. H. 
Coons. Oct., 1925. 
'73. Adsorption by activated sugar charcoal, with particular reference to adsorption and 
soil acidity. E. J. Miller. Oct., 1925. 
"74. Effect of nutrient conditions on colloidal properties of certain vegetable ci'ops. J. W. 
Crist. Feb., 1926. 
"75. Influence of nutrient supply on earliness of maturity in cabbage. J. B. Edmond and 
E. P. Lewis. Mar., 1926. 
76. Concentration of materials and rates of application in the control of apple scab. 
W. C. Dutton. June, 1926. 
QUARTERLY BULLETINS 
Quarterly bulletins, Vol. 7, No. 3-Vol. 9, No. 2. Feb., 1925-Nov., 1926. Each number 
contains a variety of articles relating to agricultural practice, based upon investiga- 
tional work of the station. 
MINNESOTA AGRICULTURAL EXPERIMENT STATION, UNIVERSITY FARM, ST. PAUL 
BULLETINS 
219. A comparison of wheat by-products for growing pigs. E. F. Ferrin and M. A. 
McCarty. Feb., 1925. 
220. Effects of forest fires on land clearing and crop production. M. J. Thompson. May, 
1925. 
221. Tankage and buttermilk as protein supplements for growing pigs. E. F. Ferrin and 
M. A. McCarty. Aug., 1925. 
222. Blanching celery. R. B. Harvey. Aug., 1925. 
223. Composition of creamery butter and its control. C. H. Eckles, J. R. Keithley and 
W. B. Combs. Sept., 1925. 
224. Management problems of farmers' elevators. H. B. Price and C. M. Arthur. Nov., 
1925. 
225. Apple pruping investigations : I, Comparison of fall, winter and spring pruning ; 
II, renovation ; III, wound healing. W. G. Brierley. Dec, 1925. 
226. Recommended varieties of farm crops for Minnesota. A. C. Amy and H. K. Hayes. 
Dec, 1925. 
227. Fuel from pine stumps, a land clearing by-product. M. J. Thompson and A. J. 
Schwantes. Feb., 1926. 
228. Field crop variety trials on the Coon Creek peat experimental fields, 1919—1925. A. 
C. Amy and F. W. McGinnis. Mar., 1926. 
229. A mineral deficiency in the rations of cattle. C. H. Eckles, R. B. Becker and L. S. 
Palmer. June, 1926. 
230. New fruits produced at the University of Minnesota fruit breeding farm. W. H. 
Alderman. July, 1926. 
231. Judging creamery efficiency. B. A. Holt and W. B. Combs. Aug., 1926. 
232. Selection and use of bacon. A. M. Child. Dec, 1926. 
TECHNICAL BULLETINS 
27. Effectiveness of calcium cyanide in poisoning the pocket gopher, Geomys oursarius 
(Shaw). F. L. Washburn and C. E. Mickel. Apr., 1925. 
28. Economic aspects of local potato warehouse organization. J. D. Black, B. A. Holt 
and G. M. Peterson. Sept., 1925. 
29. Factors affecting the price of Minnesota potatoes. Holbrook Working. Oct., 1925. 
30. Control of soil heterogeneity and use of the probable error concept in plant breed- 
ing studies. H. K. Hayes. Sept., 1925. 
31. A study of a disease of the bones and joints of swine, an osteo-arthropathy. H. C. 
H. Kernkamp. Aug., 1925. 
