324 



EXPERIMENT STATION RECORD. 



Tests with four nitrogenous manures (Dept. Agr. and Tech. Instr. Ireland 

 Jour., 11 {1911), No. 2, pp. 315-317). — Tables present in detail tlie yields ob- 

 tained during 1909 and 1910 after applications of sulphate of ammonia, nitrate 

 of soda, nitrate of lime, and calcium cyanamid to oats, potatoes, turnips, and 

 mangels. 



The results " indicate that the 2 new nitrogenous manures are not inferior 

 to the 2 manures which are already in general use." Attention is called, how- 

 ever, to the tendency of the nitrate of lime to absorb moisture and thus become 

 difficult to handle, and to the difficulty of applying the calcium cyanamid on 

 account of its fine powdery condition. 



The production of sulphate of ammonia, C. A. Davis {Jour. Amer. Peat 

 Soc, 4 {1011), No. 2, pp. 84, 85). — It is shown in this article that, following the 

 removal of the tariff, imports of ammonium sulphate into the United States have 

 rapidly increased. It is stated that the imports from all countries in 1908 

 amounted to 76,475,104 lbs. worth $1,982,830, and in 1910 to 184,086,534 lbs. 

 worth $4,668,820. 



The importance of fine grinding of lime marl and of mixing calcium 

 carbonate and caustic lime, Brehmer {IUus. Landw. Ztg., 31 {1911), No. 89, 

 p. 832, fig. 1). — Comparative tests were made of very finely ground marl and 

 of marl of ordinary fineness in pot experiments with a variety of crops. 



The results showed that the action of the marl was increased to a considerable 

 extent by fine grinding. Much better results, however, were obtained by mixing 

 ground caustic lime with calcium carbonate. 



Fertilizers from the ocean, M. Lundie and R. W. Haxlack {So. Africwn 

 Jour. 8ci., 7 {1911), No. 5, pp. 183-188). — The use of sea plants as fertilizer is 

 discussed, and analyses of samples of seaweeds, which are found in large quan- 

 tities on the coast of South Africa, are reported as follows : 



Analyses of fresh samples of South African seaweed. 



Kind of seaweed. 



Water. 



Nitrogen. 



Ash. 



Sea grass (Entoromorpha intestinalis) 



Algae ( Ulva lactuca) 



Fucus ( Fucus palmatus) 



Per cent. 

 77.44 

 78.04 

 86.42 



Per cent. 



0.567 



.350 



.071 



Per cent. 

 4.80 

 3.16 

 4.87 



In the ash of these plants the phosphoric acid varied from 3.87 per cent in 

 Fucus to 9.98 per cent in Algse, the potash from 9.5 per cent in Algse to 44.31 

 per cent in Fucus, and the lime from 7.16 per cent in Fucus to 28.96 per cent in 

 Algae. 



It is stated that these seaweeds are not at present used for agricultural pur- 

 poses in South Africa. 



[Fertilizer from salmon cannery waste], J. N. Cobb {U. 8. Dept. Com. and 

 Lahor, Bur. Fisheries Doc. 751, pp. 66, 67).— It is stated that "the most serious 

 evil in the salmon industry to-day is the enormous wastage which annually 

 occurs. About one-fourth of the total weight of each fish handled at the various 

 packing plants is thrown away." This waste could be largely prevented and the 

 by-products profitably utilized if a small odorless-fertilizer plant, costing not 

 more than $2,500 to $3,000, were available for installation in connection with 

 the canneries and salteries. Plants established at Astoria, Oreg., and Killisnoo, 

 Alaska, for the extraction of oil and manufacture of fertilizer are referred to. 



Fertilizers and Paris green, J. E. Halligan et al. {Louisiana Stas. Fert. 

 Rpt. 1910-11, pp. 101).— This is a report of official inspection of fertilizers and 

 Paris green in Louisiana during the year 1910-11, including analyses and 



