424 EXPEEIMENT STATJ()N ItECORD. 



The conversion of ammonia into nitric acid or ammonium nitrate from 

 an economic standpoint, E. Donath {Vhrtn. Indua. {Berlin}. ,57 (lOJ't), No. 

 17-18, pp. 513-516). — This article contains further discussion of the commercial 

 possibilities of this process in addition to that noted above. 



Lime and its uses on land, F. Thompson and A. E. Grantham (Delaware 

 Sta. Bui. lOJf (Wl.'i), pp. 20, pj. 1). — The various lime compounds available for 

 agricultural purposes are described and their use for fertilizing is explained. 



The position of the fertilizer supply in south India, Bkrnakd (Planters' 

 Chron., 9 (IDU/), No. J,G, pp. 697, 698).— In a brief disc-ussion of the best and 

 most available sources of supply of phosphates, potash, and nitrogen for use in 

 tliis region, it is stated that a process has been perfected for the preparation of 

 a double sulphate of potash and lime containing 25 per cent of potash which is 

 intended for use as a substitute for pure potash salts. 



Sewage disposal and use of tannery wastes, C C. Smoot, III (Jour. Amer. 

 Leather Clieni. Assoc, 9 (1914), ^o. 12, pp. 523-525). — An average analysis of 

 tannery sewage sludge after treatment with spent lime and the ashes of spent 

 tanning materials showed nitrogen 0.84 per cent, lime 40, phosphoric acid 0.34, 

 and potash 0.62. This sludge is especially recommended for the fertilizing of 

 fruit trees. 



Fertilizer and oil manufactured from dog fish, E. E. Young (Daily Cons, 

 and Trade Rpts. [U. 8.], 17 (1911,), No. 305, p. 1373).— Brief reference is made 

 to three reduction plants at Causo and Clarke Harbor, Nova Scotia, and at 

 Shippigan, New Brunswick, established primarily for the purpose of utilizing 

 dog fish in the manufacture of fertilizer and oil, thus reducing the damage 

 to the deep-sea fisheries from this source. 



The three plants work up from 5.000 to '6,(MX) tons of dog fish aimually. pro- 

 ducing from 500 to 600 tons of fertilizer and about 25,000 gal. of oil. The sup- 

 ply of dog fish, however, is very uncertain, being abundant at certain seasons 

 and very scarce at others. As a result, the factories have been obliged to sup- 

 plement the supply of dog fish with fish offal of other kinds. 



Fertilizing materials, F, T, Shutt (Canada Expt. Far)its Rpts. 1913, pp. 

 245-259). — Analyses of the following materials are reported and discussed: 

 Marl; limestone; limekiln ashes; gypsum and like substances; wood ashes; 

 potash residue from oxygen-acetylene plant; marsh, river, and oyster muds; 

 mucks; infusorial earth; lobster refuse; dog fish scrap; and nitrate of lime, 



[Fertilizer production, exports, and imports of the United States, 1912— 

 13], compiled by W, T. Thom (U. S. Geol. Survey, Mineral Resources of the 

 United States, Calendar Year 1913, pt. 1, pp. CXXXV, C'A.TATV//),— On the 

 basis of data collected by the U. S. Geological Survey it is stated that " the pro- 

 duction of lime in 1913 was 3.595,390 short tons, valued at $14,648,362, against 

 3,529,462 short tons, valued at $13,970,114, in 1912, . . . The imports for con- 

 sumption in 1913 were 4,139 short tons, valued at $48,538, against 4.268 short 

 tons, valued at $48,153, in 1912. The exports reported were valued at $212,345 

 in 1913 and $199,515 in 1912. . . . 



" The total commercial marketed production of phosphate i"ock reported to 

 the Survey in 1913 amounted to 3.111,221 long tons, valued at $11,796,231, com- 

 pared with 2,973,332 long tons, valued at $11,675,774, in 1912. . . , The total 

 quantity of phosphate rock reported as mined during 1913 was 3,152,208 long 

 tons, against 3,190,587 long tons in 1912. The imports for consumption of crude 

 phosphate, guano, kainit, manure salts, etc., in 1913, were valued at $10,819,253, 

 against $8,893,090 in 1912. The exports of phosphate rock in 1913 were 1,366.508 

 long tons, valued at $9,996,580, against 1,206,520 long tons, valued at $8,996,456, 

 m 1912. . . , 



