12 PRICE LIST 46 TTH EDITION 



MANAGEMENT Continued. 



yields to amounts of water-soluble plant-food materials recovered from 

 soils; pt. 3, Relation of differences of climatological environment to crop 

 yields. 1905. 205 pages, illus. Paper, 25c. A 26.3 : 26 



Some results in investigations in soil management. (In Agriculture Year- 

 book, 1903, pages 159 to 174.) Cloth, 75c. A 1.10 : 903 

 MANGANESE. 



Action of manganese in soils. 1914. 32 pages. Paper, 5c. A 1.3 : 42 



The results given in this bulletin throw considerable light on the effect of this 

 catalytic fertility in various soils. Manganese as a fertilizer is comparatively un- 

 known and untried in this country, so that discussion of its action is necessarily 

 scientific, yet of great interest to those growers whose technical training induces 

 them to experiment with new substances to increase or control crop production. 



Function and distribution of manganese in plants and soils. 1912. 56 pages. 



Paper, lOc. A 10.9 3 : 26 



Manganese as a fertilizer. 1913. 3 pages. Paper, 5c. A 26.4 : 75 



MANURE. See, in this list headings Fertility Fertilizers. 



MESILLA VALLEY, N. MEX.-TEX., Soil survey. 39 pages, 1 illus. map. [From 

 Field Operations, 1912.] Paper, 15c. A26.5 a :M561 



MICROSCOPIC DETERMINATION of soil-forming minerals. 1913. 100 pages, 

 illus. Paper, lOc. A 26.3 : 91 



MINERAL MATTER. 



Mineral composition of soil particles. 1908. 36 pages. Paper, lOc. 



A 26.3 : 54 

 Mineral constituents of soil solution. 1905. 70 pages, illus. Paper, 5c. 



A 26.3 : 30 



Soluble mineral matter of soils. (In Agriculture Yearbook, 1898, pages 

 495 to 504.) Cloth, 60c. A 1.10: 898 



MISSISSIPPI. See, in this list, heading Alabama. 

 MOISTURE. See, in this list, heading Water. 



MONROE COUNTY, N. Y., Soil survey. 53 pages, 1 illus. map. [From Field 

 Operations, 1910.] Paper, 15c. A26.5 a :M757 2 



MONTGOMERY COUNTY, IND., Soil survey. 26 pages, 1 illus. map. [From 

 Field Operations, 1912.] Paper, 15c. A 26.5 a : M 767 8 



MORGANTOWN, W. VA., Soil survey of area. 42 pages, illus. map. [From 

 Field Operations, 1911.] Paper, 15(5. A 26.5 a : M 823 



MULCHING. Soil mulches for checking evaporation. (In Agriculture Year- 

 book, 1908, pages 465 to 472, illus.) Cloth, $1.25. A 1.10 : 908 



NITRATES. 



Nitrate prospects in Amargosa Valley, near Tecopa, Cal. 1912. 6 pages, 

 illus. Paper, 5c. A 26.4 : 73 



Report of reconnoissance of Lyon nitrate prospect near Queen, N. Mex. 

 1912. 6 pages, illus. Paper, 5c. A 26.4 : 62 



NITROGEN. 



Nitrogenous soil constituents and their bearing on soil fertility. 1912. 



84 pages, illus. Paper, 15c. A 26.3 : 87 



Present status of nitrogen problem. (In Agriculture Yearbook, 1906, pages 



125 to 136,) Cloth, $1.00. A 1.10 : 906 



Reference list on electric fixation of atmospheric nitrogen and use of cal- 

 cium cyanamid and calcium nitrate on soils. 1910. 89 pages. Paper, lOc. 



A 26.3 : 63 



Relation of bacterial transformations of soil nitrogen to nutrition of citrous 

 plants. (In Journal of Agricultural Research, May, 1914, pages 101 to 

 113, illus.) Paper, 25c. A1.23:2 2 



Utilization of atmospheric nitrogen. 1912. 178 pages, illus. Paper, 15c. 



C 10.13 : 52 



A description of various chemical processes which have been invented to produce 

 nitrogen, the most necessary element in fertilizers. Included is a short descrip- 

 tion of all the known nitrate fields. 



NOTE. In ordering publications from this List use the words of the title as far as the 

 first period, and all the composite number which follows the price. 



