I BUL. 1199 (SUP. 2), U. S. DEPARTMENT OF AGRICULTURE 
223. The growth, returns and uses of planted cottonwood in Iowa. G. B. MacDonald.- 
Nov., 1924. 
224. Rural social survey of Hudson, Orange, and Jesup consolidated school districts, 
Blackhawk and Buchanan Counties, Iowa. G. H. Von Tungeln and H. L.- 
Eells. Nov., 1924. 
RESEARCH BULLETINS 
74. Studies on ropiness in cultures of Streptococcus lactis. B. W. Hammer. Jan., 
1923. 
75. The color of soils in relation to organic matter content. P. E. Brown and A. M. 
O'Neal, jr. Mar., 1923. 
76. Relationships between hydrogen ion, hydroxyl ion and salt concentrations and the 
growth of seven soil molds. H. W. Johnson. Jan., 1923. 
77. Dry rot of corn. L. W. Durrell. July, 1923. 
78. Bionomics and control of the potato leafhopper (Empoasca mali Le Baron). F. A. 
Fenton and Albert Hartzell. July, 1923. 
79. Raising orphan pigs : I, Protein modifications of cows' whole milk, frequency 
of feeding, nutritive ratio studies. J. M. Evvard, G. V. Glatfelter, and' 
Q. W. Wallace. July, 1923. 
80. The volatile acids produced by starters and by organisms isolated from them. 
B. W. Hammer and F. F. Sherwood. July, 1923. 
81. Studies on Streptococcus paracitrovorus group. B. W. Hammer and M. P. Baker. 
July, 1923. 
SOIL SURVEY REPORTS 
29. Mahaska County soils. W. H. Stevenson, P. E. Brown, L. W. Forman, and 
J. A. Elwell. June, 1923. 
30. Fayette County soils. W. H. Stevenson, P. E. Brown, L. W. Forman, H. J. 
Harper, and H. W. Warner. June, 1923. 
31. Wright County soils. W. H. Stevenson, P. E. Brown, L. W. Forman. and T. H. 
Benton. June, 1923. 
32. Johnson County soils. W. H. Stevenson, P. E. Brown, L. W. Forman, T. H.. 
Benton, and G. H. Artis. June, 1923. 
33. Mills County soils. W. H. Stevenson, P. E. Brown, L. W. Forman, and N. J.. 
Russel. Mar.. 1924. 
34. Boone County soils. W. H. Stevenson, P. E. Brown, L. W. Forman, A. M. 
O'Neal, and A. M. Deyoe. Apr., 1924. 
35. Dubuque County soils. W. H. Stevenson, P. E. Brown, C. L. Orrben, L. W. 
Forman, J. L. Boatman, and W. G. Baker. Sept., 1924. 
36. Emmet County soils. W. H. Stevenson, P. E Brown, D. S. Gray, L. W. Forman,- 
and W. G. Baker. Nov., 1924. 
*37. Dickinson County soils. W. H. Stevenson, P. E. Brown, L. W. Forman, J. L. 
Boatman, and W. G. Baker. Dec, 1924. 
KANSAS AGRICULTURAL EXPERIMENT STATION, MANHATTAN 
BULLETINS 
230. Marketing milk in six cities of Kansas. F. L. Thomsen. Nov., 1923. 
231. Potato disease control in Kansas. E. A. Stokdyk and L. E. Melcbers. Mar.,- 
1924. 
232. Assessment and equalization of farm and city real estate in Kansas. Eric 
Englund. July, 1924. 
233. The relation of feeding and age of calving to the development of dairy heifera.- 
0. E. Reed, J. B. Fitch, and H. W. Cave. July, 1924. 
234. Tax revision in Kansas. Eric Englund. Dec, 1924. 
TECHNICAL BULLETINS 
10. Blackleg vaccines, their production and use. J. P. Scott. June, 1923. 
11. The Hessian fly in Kansas. J. W. McColloch. July, 1923. 
12. Relative water requirement of corn and sorghums. E. C. Miller. Oct., 1923, 
13. Seeding small grain in furrows. S. C. Salmon. Jan., 1924. 
