60 
Colorado Experiment Station 
A soil study. Part 2. The crop grown; 
sugar beets. W. P. Headden. B. 58, 
1900. 
A soil study Part 3. The soil. W. P. 
Headden. B. 65, 1901. 
A soil study. Part 4. The ground wa- 
ter. W. P. Headden. B. 72, 1902. 
Soils — 
acid soluble in. B. 65 :3l, 1901. 
alkali. B. 65 :39, 1901. 
analysis. B. 9 :19, 1889 ; B. 
65 :6, 1901. 
composition in Colorado. B. 
183:5, 1912. 
effect on plants. B. 9 :18, 1889. 
formation. B. 9 :16, 1889. 
in draw on college farm — 
analysis. B. 65 :12, 1901. 
description. B. 65:3, 1901. 
relation to nitrogen fixation. B. 
186, 1913. 
amjnonia in. B. 65 :42, 1901. 
ammonification in. B. 184, 1912 ; 
B. 193 :7, 1914. 
ammonium carbonate, nitrification 
of. B. 193:27, 1914; B. 193:34, 
1914. 
ammonium chlorid, nitrification of. 
B. 193:26, 1914. 
analysis. B. 65 :25, 1901. 
bacteria content of, B. 208 :29, 
1915. 
capillarity in. B. 103 :18, 1905. 
chemical changes. B. 65:19, 1901. 
chemical studies. B. 9 ;11. 1889. 
Colorado, analysis. B. 65 :51, 1901. 
composition of. B. 99 :5, 1905. 
cultivation to conserve moisture in. 
P. B. 39, 1907 ; Same, B. 123 :10, 
1907. 
exhaustion due to drain waters. B. 
83 :13, 1903. 
feldspar’s effect on. B. 65 :28, 1901. 
formation of. B. 9 :3, 1889. 
humus in. B. 65 :45, 1901. 
loess as compared to other. B, 
65 :16, 1901. 
maintaining fertility. B, 99, 1905. 
moisture. B. 217 :7, 1916. 
niter — 
ammonifying efficiency of. B. 
184:20, 1912. 
reclaiming. B. 235 :3, 1918. 
nitrates in. B, 65:43, 1901 ; B. 
217:17, 1916. 
nitrification of dried blood in. B. 
193 :29, 1914 ; B. 193 :36, 1914. 
nitrifying efficiency. B. 193 :7, 
1914. 
Soils (Continued) — 
Nitrifying efficiency (Continued) — 
Colorado soils compared to 
foreign (chart.) B. 193:39, 
1914. 
nitrogen fixation in. B. 155, 1910; 
B. 178, 1911; B. 186, 1913; B. 
219 :3, 1916. 
bacteriological studies. B. 179, 
1911. 
nitrogen in. B. 160, 1910. 
analysis. B, 160 :7, 1910 ; B. 
178, 1911. 
origin of. B. 99 :4, 1905. 
physical properties. B. 9 :6, 1889. 
plant food, replacing. B. 99 :7, 1905. 
San Luis Valley. B. 209 :5, 1915. 
sulphate of ammonia in — 
nitrification of. B, 193 :23, 
1914 ; B. 193 :32, 1914. 
water’s effect on. B. 65:22, 1901. 
water soluble in. B. 65 :32, 1901. 
wheat. B. 89 :28, 1904. 
Soils and alkali. D. O’Brine, B. 9. 
1889. 
Solamim rostrcitum. See Buffalo-bur. 
Solar radiation. See Meteorological ob- 
servations. 
Some animal diseases. G. H. Glover, 
C. L. Barnes and B. F. Kaupp. B. 
137, 1909. 
Some bacterial diseases of plants. Wal- 
ter G. Sackett. B. 138, 1909. 
Some Colorado grasses and their chemi- 
cal analysis, J. Cassidy and D. 
O’Brine. B. 12, 1890. 
Some Colorado mushrooms, B. O. 
Longyear. B. 201, 1914. 
Some insects and mites attacking the 
peach in Colorado. G. P. Weldon. B. 
169, 1910. 
Some new Colorado Orthoptcra. Law- 
rence Bruner. B. 94, 1904. 
Some of the more important insects of 
1903, and an annotated list of Colo- 
rado Orthoptcra. C. P. Gillette. B. 
94, 1904. 
Some poultry diseases. B, F. Kaupp. 
B. 185, 1912. 
Some soil changes produced by micro- 
organisms, Walter G. Sackett. B. 
196, 1914. 
Sorghum — 
fodder — 
analysis. B. 124 :56, 1907. 
Calorific value, B. 124 :60, 
1907. 
coefficient of digestion. B, 124 : 
58, 1907. 
digestibility. B. 93:33, 1904; 
B, 124:58, 1907. 
