PENNSYLVANIA PORTO RICO RHODE ISLAND— SOUTH CAROLINA 23 
PENNSYLVANIA AGRICULTURAL EXPERIMENT STATION, STATE COLLEGE 
BULLETINS 
178. Silage feeding investigations for milk production. S. I. Bechdel. Feb., 1923. 
179. Results of tobacco experiments in Pennsylvania, 1912 to 1922. Otto Olson. June, 
1923. 
180. Author index of the publications of the Pennsylvania agricultural experiment 
station. William Frear and T. I. Mairs. Aug., 1923. 
181. 36th annual report of the director for the fiscal year ending June 30, 1923. 
R. L. Watts. Sept., 1923. 
182. The effects of feeding punctures of aphids on certain plant tissues. J. L. Horsfall. 
Nov., 1923. 
183. Steer feeding experiments at the Pennsylvania State college. W. H. Tomhave 
and F. L. Bentley. Dec, 1923. 
1S4. Adjusting production to meet home market demands in Blair County, Pennsyl- 
vania, a report of the extent to which Blair County farmers are meeting the 
demands of Altoona for agricultural products. R. B. Dunlap, B. H. Critch- 
field, and M. V. Carroll. Jan., 1924. 
185. Life history studies of Myzus persicae Sulzer. J. L. Horsfall. Feb., 1924. 
186. The control of plant lice on vegetables. J. L. Horsfall. Mar., 1924. 
187. Soybeans, their culture and uses. C. F. Noll and R. D. Lewis. Apr., 1924. 
188. 37th annual report of the director for the fiscal year ending June 30, 1924. R. L. 
Watts. Aug., 1924. 
189. (Technical bulletin.) Statistical studies of inheritance in the tomato: A sta- 
tistical comparison between parental forms and certain segregates in a cross 
of the common garden tomato, Lycopersicum esculentum, by pear tomato, 
Lycopersicum pyriforme, and the significance of these differences as illustrated 
by certain statistical constants. C. E. Myers. Sept., 1924. 
190. Comparison of materials used in spraying and dusting for apple scab control in 
Pennsylvania. H. W. Thurston, jr., R. C. Walton, and F. N. Fagan. Dec, 
1924. 
PORTO RICO AGRICULTURAL EXPERIMENT STATION, MAYAGUEZ 
BULLETIN 
\ 
30. Coffee varieties in Porto Rico. T. B. McClelland. June, 1924. 
RHODE ISLAND AGRICULTURAL EXPERIMENT STATION, KINGSTON 
BULLETINS 
191. The colon-typhoid intermediates as causative agents of disease in birds : II, Atypi- 
cal organisms. H. G. May and H. A. M. Tibbetts. Jan., 1923. 
192. Preliminary study of the methods and means of handling fresh produce in Rhode 
Island. H. B. Hall. Jan., 1923. 
193. Thirty-fifth annual report of the director [1922]. B. L. Hartwell. Feb., 1923. 
194. " Active " aluminum as a factor detrimental to crop production in many acid 
soils. P. S. Burgess and F. R. Pember. June, 1923. 
195. On the amount of stable manure necessary for vegetable growing. B. L. Hart- 
well and F. K. Crandall. Aug., 1923. 
196. The comparative crop effect of fertilizer chemicals, cow manure with straw bed- 
ding or with planer-shavings bedding, and of the latter supplemented with 
phosphorus or potassium. B. L. Hartwell, S. C. Damon, and F. K. Crandall. 
Nov., 1923. 
197. The examination of eggs from infected and immunized hens, with germicidal tests 
on albumen and blood serum. H. G. May. May, 1924. 
198. The yield and mineral content of crop plants as influenced by those preceding. 
P. S. Burgess. June, 1924. 
SOUTH CAROLINA AGRICULTURAL EXPERIMENT STATION, CLEMSON COLLEGE 
BULLETINS 
216. Velvet beans for dairy cows. J. P. Lamaster and I. R. Jones. Sept., 1923. 
217. Analyses of commercial fertilizers, 1922-1923. R. N. Brackett and H. M. Stack- 
house. Aug., 1923. 
218. Certified seed in Irish potato production. A. M. Musser and C. A. Ludwig. 
Dec, 1923. 
