322 EXPEEIMENT STATION EECORD. 



cusses the composition, occurrence, and uses of feldspar and gives statistics of 

 productinon in the United States and other countries. 



" The marketed production of feldspar in the United States in 1913 was 

 320,955 short tons, valued at $776,551. Both in quantity and in value this was 

 the largest recorded annual production. Each important producing State — 

 California, Connecticut, Maine, Maryland, New York. North Carolina, and Penn- 

 sylvania — showed an increase in both quantity and value. During the year 

 about 50 quarries marketed feldspar. Ten of them were new producers. Not- 

 withstanding the increase in quantity and the production from new sources 

 the average price per ton of the total production was higher than in any other 

 year." 



Alunite, a newly discovered deposit near Marysvale, Utah, B. S. Butler 

 and H. S. Gale (U. S. Geol. Suncij- Bui. 511 {1912), pp. 6-',, pJs. 3).— This de- 

 posit is described and its significance as a source of potash is discussed. Other 

 known occurrences of alunite in the United States, as well as in foreign 

 countries, are also referred to. 



" The Marysvale deposit, so far as now known, is not of such magnitude as 

 to afford a source of all the potash salts now consumed in the United States, 

 but it may prove to be an important factor in providing an American supply 

 that will perhaps be especially available to local and western markets, par- 

 ticularly in meeting the demand for higher-grade salts. Possibly also the 

 greatest importance of the commercial development of this deposit will be in 

 the added stimulus it may afford to exploration for other similar deposits of 

 this mineral, especially in this general region, and it is on the discovery of 

 such other deposits that the provision of a home supply from this source must 

 depend." 



It is estimated that the Marysvale deposit would yield 30.000 tons of potash 

 for each hundred feet in deptli or from one-sixth to one-seventh of the total 

 annual consumption of the United States. 



Ground limestone for southern soils, C. G. Hopkins {South. Settlement and 

 Develop. Organ., Farm Truth 1 {1914), pp. 38). — The need and value of liming 

 (use of ground limestone) for southern soils is fully set forth largely on the 

 basis of experiment station work, and practical directions for liming are given. 



Soil acidity and liming {Missouri Bel. Agr. Mo. Bui., 12 {1914), No. 2. pp. 27, 

 figs. 11). — This bulletin is a partial reprint, with an introductory chapter by 

 M. F. Miller, of those parts of Wisconsin Station Bulletin 230 (E. S. R.. 29, p. 

 G23), which are considered applicable to Missouri conditions. 



It is stated that the soils in Missouri which are the most strikingly in need 

 of lime are the more level portions of the prairies of northeast and southwest 

 Missouri which are inclined to be wet. Other areas needing it are some of the 

 old farmed lands and high ridge tops of the Ozark border and Ozark region 

 proper. The poorer timber lands of northeast Missouri along the streams in 

 the central and eastern parts of the State are in general more or less in need 

 of lime. 



The removal of lime from soil by acid furnace fumes and its effect on 

 plants, A. WiELER {Jahrcsber. Ver. Angor. Bot., 10 {1912), pp. 58-7^. figs. 6). — 

 From his experiments with trees and field crops on limed and unlimed soils in 

 the vicinity of smelters the author arrived at practically the siime conclusions 

 as in previous work (E. S. R., 28. p. 623). 



Useful minerals of the United States, S. Sanford and R. W. Stone {U. 8. 

 Geol. Survei/ Bui. 585 {1914), pp. 250).— This is a list showing the composition, 

 character, and location of deposits of the principal useful minerals in each 

 State. 



