FIELD CROPS. 751 



States and the world, and jn-ices and iniportn are given for a number of years. The 

 total ijroductioii in the United States in 1901 was 1,483,723 long tons, valued at 

 $5,31(1,403, as conijiared with 1,491,216 tons, valued at 15,359,248, in 1900. Of the 

 total United States product in 1901, 751,996 tons was furnished by Florida, 321,181 

 tons by South Carolina, 409,653 tons by Tennessee, and 893 tons by Pennsylvania. 

 The production of the United States exceeds that of the rest of the world combined. 



The Stassfurt industry {New York: (lerman Kali Worts, 1902, pp. 65, figs. 29).^ 

 This is a brief summary of information regarding the discovery and beginnings of 

 mining of the Stassfurt potash deposits, the origin and formation of the deposits, 

 methods of mining, character of the salts mined, methods of maimfacturing the con- 

 centrated salts, production and consumption of jjotash salts, the use of jjotash in 

 agriculture, and the salts used for fertilizing purposes. According to the statistics 

 given, the total production of crude salts (carnallit, kieserit, sylvinit, kainit, and 

 hartsalz) of the Stassfurt mines in 1901 was 3,484,694 metric tons (of 2,204 lbs. each), 

 of which 1,438,579 tons was used directly as fertilizer and the remainder, 2,046,115 

 tons, was used in the manufacture of concentrated salts (muriate and sulphate of 

 potash, sulphate of potash and magnesia, potash manure salt, and kieserit), the total 

 production of whii-h in 1901 was 426,561 tons. Of the total amount of actual potash 

 (K^O) produced in 1901, 270,826 tons was used in agriculture and 72,323 tons in other 

 industries. Germany used for agricultural purposes in 1900 117,712 tons of actual 

 potash. The amount used for the same pur])ose in the United States in 1899 was 

 52,667 tons. 



Gypsum, J. Struthers {Mineral Remurces of the United States. Dept. Interior, 

 U. S. Geol. Surrey, 1901, pp. 843-851). — Statistics of production in the United States 

 and the world and of imports are given. A remarkable increase in the production of 

 gypsum in the United States during recent years is reported. " The total produc- 

 tion of gypsum in the United States during 1901 was 659,659 short tons, valued at 

 $1,577,493, as compared with the total ])roduction during 1900 of 594,462 short tons, 

 valued at $1,627,203, which shows an increase of 65,197 short tons in quantity and a 

 decrease of $49,710 in value." 



Yearbook on the use of commercial fertilizers, 1903, M. Ullmann {Jahr- 

 buclt i'lher die Anirendang li'instlirher Dnugeniittcl, 190S. Harnhurg: J. H. Koch & Co., 

 1903, pp. 32, figs. 13). — This contains a calendar and gives brief simple directions, 

 applicable especially to German conditions, regarding the use of commercial ferti- 

 lizers on various crops, based largely on the work of the experiment station of Ham- 

 l>urg-Horn, of which the author is director. There is also a brief discussion of the 

 possibility of Germany becoming agriculturally self-sustaining. 



Consumption of fertilizers {Amer. Fert., 18 [1903), No. 1, pp. 10-15). — This 

 article gives data compiled from the last United States Census, and reported by 

 State inspectors (jf fertilizers and Departments of Agriculture and from other sources. 



FIELD CROPS. 



Results obtained in 1902 from trial plats of grain, fodder corn, field roots, 

 and potatoes, W. Saunders {Qmada Cent. Rrpt. Farm Bnl. 41, jjp. 6i)— This bul- 

 letin is the customary annual report of cooperative variety tests now in progress for 

 8 years at the Canada Experimental Farms (E. S. R., 13, p. 838). The yields of the 

 different crops at the several farms are given in tables. The varieties producing the 

 largest crops in 1902, taking the average results obtained on all the experimental 

 farms and giving them in the oi'der of their productiveness, were as follows: 



Oats. — Siberian, Banner, Danish Island, Holstein Prolific, Golden Giant, Colum- 

 bus, Golden Tartarian, Early Golden Prolific, New Zealand, Buckbee Illinois, Men- 

 nonite, and Tartar King. Average yield per acre, 78 bu. 17 lbs. Two-rowed barley.— 

 Danish Chevalier, Canadian Thorpe, Kinver Chevalier, French Chevalier, Invincible, 



