874 



AGRICULTURAL INDEX 



Soils — Continued 



Bibliography 

 Soils and fertilizers; list of United States 

 government publications, for sale by super- 

 intendent of documents, "Washington, D.C. 

 (Price list 46— 11th ed) 22p '18 Supt. of doc, 

 Washington, D.C. 



Calcium content 

 Calcium compounds in soils. E. C. Shorey and 



others. J Ag Research 8:57-77 Ja 15 '17 

 Effect of elemental sulphur and of calcium 

 sulphate on plant life. W. Pitz. il J Ag Re- 

 search 5:771-80 Ja 17" '16 



Carbon content 



Loess soils of Nebraska. F: G. Alway and 

 G. R. McDole. Soil Sci 1:226-34 Mr '16 



Organic matter of the soil: a study of carbon 

 and nitrogen in seventeen successive ex- 

 tracts; with some observations on the na- 

 ture of the black pigment of the soil. R. A. 

 Gortner. bibliog Soil Sci 2:539-48 D '16 



Total nitrogen and carbon in cultivated land 

 and land abandoned to grass and weeds. 

 A. W. Blair and H. C. McLean, bibliog Soil 

 Sci 4:283-92 O '17 



Carbon dioxide content 

 Effect of certain factors on the carbon-dioxide 

 content of soil air. J. A. Bizzell and T. L. 

 Lyon. Am Soc Agron J 10:97-112 Mr '18 



Classification 



Chemical criteria, crop production and physi- 

 cal classification in two soil classes. J: S. 

 Burd. bibliog Soil Sci 5:405-19 My '18 



Report of the committee of the American so- 

 ciety of agronomy. Am Soc Agron J 8:387- 

 90 N '16 



Colloid content 



See Soil colloids 



Composition 



Calcium, magnesium, potassium, and sodium 

 in the drainage water from limed and vin- 

 limed soil. T. L. Lyon and J. A. Bizzell. Am 

 Soc Agron J 8:81-91 Mr '16 



Carbon and nitrogen changes in the soil vari- 

 ously treated: soil treated with lime, am- 

 monium svilfate and sodium nitrate. R. S. 

 Potter and R. S. Snyder, bibliog il Soil Sci 

 1:76-94 Ja '16 



Composition of soils and the formation of 

 humus. J For 16:115-19 Ja '18 



a-Crotonic acid, a soil constituent. E. H. Wal- 

 ters and L: E. Wise, bibliog il J Ag Re- 

 search 6:1043-6 S 18 '16 



Decomposition of soil carbonates. W. H. Mac- 

 Intire. J Ag Research 3:79 O '14 



Detailed study of effects of climate on impor- 

 tant properties of soils. C. B. Lipman and 

 D. D. Waynick. bibliog il Soil Sci 1:5-48 Ja 

 '16 



Does CaCO, or CaSOi treatment affect the 

 solubility of the soil's constituents? C. B. 

 Lipman and W. P. Gericke. Cal Univ Pub 

 Ag Sci v 3, no 7 271-82p '18 (10c) 



Effect of quicklime on organic matter in soils. 

 F. E. Bear. Am Soc Agron J 8:111-13 Mr '16 



Field test with a toxic soil constituent: vanil- 

 lin. J. J. Skinner, il U S Ag B 164:1-9 '15 



How soils are made. T. Butler. Prog F 31:47 

 Ja 8 '16 



Influence of the mechanical composition of the 

 soil on the availability of nitrate of soda 

 and dried blood, il N J Ag Exp Rep 1916: 

 369-80 '17 



Inorganic composition of some important 

 American soils. W. O. Robinson. U S Ag B 

 122:1-27 '14 



Loess soils of the Nebraska portion of the 

 transition region: mechanical composition 

 and inorganic constituents. F: J. Alway and 

 C. O. Rost. bibliog Soil Sci 1:405-36 My '16 



Loess soils of the Nebraska portion of the 

 transition region: potash, soda, and phos- 

 phoric acid. F. J. Alway and R. M. Isham. 

 bibliog map Soil Sci 1:299-316 Ap '16 



Loess soils of the Nebraska portion of the 

 transition region: the water-soluble constit- 

 uents. F. W. Upson and others, bibliog map 

 Soil Sci 2:377-86 O '16 



Nitrogenous soil constituent: tetracarbonimid. 

 E. C. Shorey and E. H. Walters, bibliog J 

 Ag Research 3:175-8 N '14 



Organic matter of the soil. R. A. Gortner. bib- 

 liog Soil Sci 2:395-441, 539-48; 3:1-8 N '16-Ja 

 '17 



Organic matter of the soil: some data on 

 humus-phosphoric acid. R. A. Gortner and 

 W: M. Shaw, bibliog Soil Sci 3:99-111 F '17 



Origin, formation, and composition of soils. 



A. R. Whitson and H. B. Hendrick. U S Ag 

 B 355:2-10 '16 



Petrography of some North Carolina soils 

 and its relation to their fertilizer require- 

 ments. J. K. Plummer. il J Ag Research 5: 

 569-82 D 27 '15 



Presence of some benzene derivatives in soils. 



B. C. Shorey. J Ag Research 1:357-63 F '14 

 Relation of some of the rarer elements in 



soils and plants. W. O. Robinson and 



others, bibliog plans U S Ag B 600:1-25 '17 

 Researches on the eqviilibrium between the ni- 

 trogen and carbon in the soil. P. Felber. Int 



R Sci & Prac Ag 8, no 1:22-4 Ja '17 

 Soil formation and composition. J. W. Ames. 



Ohio Ag Exp B v 1:46-9 F '16 

 * Soil sickness researches. Sci Am Sup (233 



Broadway, N.Y. 10c) 86:378 D 14 '18 

 Solubility of plant-food elements as modified 



by fertilizers. C: A. Jensen. Am Soc Agron 



J 8:100-5 Mr '16 

 Studies on the organic matter of the soil of 



the United States. Int R Sci & Prac Ag 9, 



no 1:25-31 Ja '18 

 Variation in the chemical composition of soils. 



W. O. Robinson and others. U S Ag B 551: 



1-16 '17 

 Water extractions of soils as criteria of their 



crqp-producing power. J: S. Burd. J Ag 



Research 12:297-309 F 11 '18 



Kee also Soil bacteriology; Soil fungi; 



Soil microbiology; Soil protozoa 



Crotonic acid content 



See Crotonic acid 



Experiments 



Effect of liming on crop yields in cylinder 

 experiments. J. G. Lipman and A. W. 

 Blair, il Soil Sci 6:157-61 Ag '18 



Experiments in methods for deterinining the 

 reaction of soils. H. R. Christensen. bibliog 

 Soil Sci 4:115-78 Ag '17 



Facilities for lysimeter and out-door pot cul- 

 ture work at the station. J. F. Barker, il 

 N Y State Ag Exp Tech B 61:1-10 '17 



Freezing point method as a new means of 

 studying velocity of reaction between soils 

 and chemical agents and behavior of equi- 

 librium. G: J. Bouyoucos and W. A. Laiide- 

 man. Mich Ag Exp Tech B 37:1-32 '17 



Growing plants in large containers under con- 

 trol conditions. R. C. Wright, il Am Soc 

 Agron J 8:113-16 Mr '16 



Kankakee covmty soils. C. G. Hopkins and 

 others, il maps 111 Ag Exp Soil Report no 

 13 72p '16 



Method for determining the volume weight of 

 soils in field condition. C: F. Shaw. Am Soc 

 Agron J 9:38-42 Ja '17 



New method of extracting the soil solution. 

 C: B. Lipman. Cal Univ Pub Ag Sci v 3, no 

 7 131-4p '18 (5c) 



Preliminary investigations in comparison of 

 field with laboratory experiments in soil 

 biologJ^ G: P. Koch. Soil Sci 2:87-92 Jl '16 



Quantitative media for the estimation of bac- 

 teria in soils. R. C. Cook, bibliog Soil Sci 

 1:153-61 F '16 



Size of plots for field experiments with soils. 

 T. L. Lyon, bibliog Am Soc Agron J 9:405- 

 10 D '17 



Soil experiment fields — a progress report. G: 

 Roberts, il Ky Ag Exp B 199:43-93 '16 



