NOHTH DAKOTA. 129 
126. Crop rotation and soil fertility. By R. C. Doneghue. May, 1918. 
127. Pork production in North Dakota. By W. H. Peters and D. J. Geiken. July, 1918. 
128. New labor saving machinery for harvesting grain. By W. R. Porter. Apr., 1919. 
129. Potato experiments 1917 and 1918. By H. O. Werner. May, 1919. 
130. Report of the Hettinger substation for the years 1913-1918, inclusive. [By J. H. Shepperd and others.] 
May, 1919. 
131. Report [7-11] of the Dickinson substation for the years 1914-1918, inclusive. [By J. H. Shepperd and 
others.] Oct., 1919. 
132. Not published. 
133. Not published. 
134. Report of the Langdon substation, 1914 to 1919. By P. F. Trowbridge. Sept., 1920. 
135. Thirteenth and fourteenth annual report of the State demonstration farms 1918 and 1919. By W. R. 
Porter. May, 1920. 
136. Report of the director, July 1, 1917 to June 30, 1919. By P. E., Trowbridge. Mar., 1920. 
137. The bread value of wheat. By Thomas Sanderson. May, 1920. 
138. Twelfth annual report of the Dickinson substation, 1919. By Leroy Moomaw. July, 1920. 
139. Some factors related to the quality of wheat and strength of flour. By W. L. Stockham. Sept., 1920. 
140. Grass fat cattle warmed up on corn fodder with a straw shed as shelter. By J. H. Shepperd. Sept., 
1920. 
141. Fall plowing vs. spring plowing for North Dakota grain crops. By H. L. "Walster. Sept., 1920. 
142. The cost of producing wheat and other crops in North Dakota in 1919. By R. E. Willard. Sept., 1920. 
143. Earliness and rustiness of spring wheats. By H. L. "Walster. Dec, 1920. 
PAINT BULLETINS. 
1. Report on service condition of paints. By H. A. Gardner, George Butler, and Charles MacnichoL 
Feb., 1910. 
2. Report on the service condition of paints. By John Theobald and R. L. Peters. Feb., 1910. 
3. Report on the service condition of paints. By S. M. Evans, R. W. Evans, and L. S. Hughes. Feb., 
1910. 
4. Report on service condition of paints. By John Dewar. Apr., 1910. 
Vol. I, No. 5. Analysis of mixed paints. Apr., 1911. 
Vol. I, No. 6. Lessons from the 1906 test fence. By E. F. Ladd and W. F. Washburn.— The North Da- 
kota paint law and its workings. By E. F. Ladd. — Analyses of commercial paints. By E. F. Ladd 
and W. F. Washburn.— Method for varnish anaysis. By R. W. Darner. Mar., 1915. 
Vol. I, No. 7. A study of the fatty acids obtained from varnish oils and varnishes. By W. T. Pearce. — 
The wearing quality and physical tests of several exterior varnishes compared with their chemical 
analysis. By W. T. Pearce and E. V. Ladd.— Soya bean investigation. By Culver Ladd. Oct., 1919. 
SPECIAL BULLETINS. 
1. Rocky mountain locusts. By H. E. Stockbridge. July, 1891. 
2. Weeds. By L. R. Waldron. May, 1903. 
SPECIAL BULLETINS, FOOD DEPARTMENT. 
Individual numbers of this series often have no distinctive title, but are made up of items relating to 
food and drug inspection. Reports of work of more than routine interest are brought out in the following 
list. 
1. Pure food law and rulings of the food commissioner. By E. F. Ladd. Apr., 1902. 
2. A warning regarding the use of chemical preservatives in meats. By E. F. Ladd. Mar., 1905. 
3. Pure food, pure drug, formaldehyde, Paris green and paint laws. By E. F. Ladd. Apr., 1905. 
4. Pure food law amended and reenacted; pure drug law; paint law; rulings and discussions. By E. F. 
Ladd. Apr., 1906. 
5. Agricultural laws. By E. F. Ladd. Apr., 1907. 
6. Food and drug laws. By E. F. Ladd. Apr., 1907. Revised reprint, May, 1915. 
7. Labels and rulings. By E. F. Ladd. Nov., 1907. 
8. Labels and rulings. By E. F. Ladd. Oct., 1908. 
9. Chemically treated flours. By E. F. Ladd. Dec, 1908. 
10. Model food law bill. By E. F. Ladd. Dec, 1908. 
11. Pure beverage law; sanitary inspection law; rulings and discussions. By E. F. Ladd. May, 1909. 
Revised reprint, Dec, 1911. 
Vol. I, No. 12. [Miscellaneous items.] June, 1909. 
Vol. I, No. 13. [Miscellaneous items.] July, 1909. 
Vol. I, No. 14. The food preservative controversy. [By E. F. Ladd.] Aug., 1909. 
Vol. I, No. 15. [Miscellaneous items.] Sept., 1909. 
Vol. I, No. 16. [Miscellaneous items.] Nov., 1909. 
Vol. I, No. 17. The model food law bill. By E. F. Ladd. Nov., 1909. 
Vol. I, No. 18. [Miscellaneous items.] Nov., 1909. 
Vol. I, No. 19. Durum wheat flour. Nov., 1909. 
Vol. I, No. 20. ^Miscellaneous items.] Jan., 1910. 
Vol. I, No. 21. [Miscellaneous items.] Mar., 1910. 
Vol. I, No. 22. [Miscellaneous items.] Apr., 1910. 
Vol. I, No. 23. [Miscellaneous items.] May, 1910. 
Vol. I, No. 24. [Miscellaneous items including:] Blending of durum with hard spring wheat flour. By 
L. M. Thomas. June, 1910. 
Vol. I, No. 25. [Miscellaneous items including:] Velvet chaff vs. hard spring wheats. Aug., 1910. 
Vol. I No. 26. [Miscellaneous items including:] Bread wrapping. By L. W. Thomas.— Acidity of wrapped 
bread. By H. L. White. — Millingjand banking] test of hard red spring versus velvet chaff wheat. 
By Thomas Sanderson [and C. H. Bailey]. Sept., 1910. 
Vol. I, No. 27. [Miscellaneous items.] Nov., 1910. 
Vol. I, No. 28. [Miscellaneous items including:] Quantitative determination of water in pastes, semi- 
pastes, and mixed paints. By L. P. Nemzek. Dec, 1910. 
Vol. I, No. 29. [Miscellaneous items.] Jan., 1911. 
Vol. I, No. 30. [Miscellaneous items.] Feb., 1911. tt 
Vol. I, No. 31. [Miscellaneous items including:] An address on meat inspection. By Leunis Van Es. 
Mar., 1911. 
Vol. I, No. 32. [Miscellaneous items.] Apr., 1911. 
Vol. I, No. 33. [Miscellaneous items.] May, 1911. 
Vol. I, No. 34. [Miscellaneous items.] June, 191L. 
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