FERTIUZEKS. 1031 



present. In tlie author's opinion ronipU'tc information an to the soil potash can l)e 

 obtained only hy 4 distinct doterniinations, ( 1 ) the total potash, inclndin<r tiiat com- 

 bined as silicates, (2) potash solnblc in weak mineral acids, (:>) potasli soliil)le in 

 citric acid (1 frm. per liter), and (4) jtotash soluble in water. 



Why and when may one dispense with potash fertilizing? A. Fki.ijkr ( Dnil. 

 L<ni(hr. /'n'M,-, J!J ( I'.KIJ), So. ,.'(), jiji. n;.}, /i;.-,, Jigs. .;> . — Kxpcriiiieiits with oats to test 

 this point are reporte(l. Stable mamire was applied alone and in condonation with 

 potash salts and nitrogenons and phosphatic fertilizers. The results show that the 

 potash .salts in some cases gave profitable returns on soils well supplied with potash 

 and receiving liberal applications of manure. This is attributed to the fact that 

 the potash compounds of the soil and of manure are not readily assimilable by 

 plants. In the author's opinion the neeil of soils for potash can be determined only 

 by carefully planned and conducted experiments. It is also claimed that potash 

 salts may be safely used in combination with any kind of fertilizer or manure. 



Potash salts as a top-dressing, A. Felber {Druf. Lamhr. Prrssc, 20 {1902), No. 

 28, pp. 2.i7, 23S,^tJil. I). 



The use of potash as a protection against injury from frost, N'lHit.ws [Ikvt. 

 Landw. PresHP, W (1902), No. 18, p. i.^).— Referring to Baumann's observations that 

 plants fertilized with potash salts were injured to a less extent by frost than those not 

 so treated, the author suggests that this may be a result entirely of physical action 

 in the soil influencing the temperature, and not due to concentration of the carbo- 

 hydrates in the plant, as suggested by Baumann. He cites in supjiort of this view the 

 old practice of applying kainit to the soil, in anticipation of frost, to protect beets. 



Potash as a protection against frost, Baimaxn ( Driit. [Atndw. Pressc, 29 (1902), 

 No. 23, p. 197). — In reply to above suggestion of Vibrans the author points out that 

 the beneficial action of potasli salts in protecting from frost was observed after these 

 salts had been taken u)) by the plants from the soil. 



The value of liming for marsh soils, E. Moller {Ikul. Landir. PrcitKC, 29 {1902), 

 No. 30, p. 2.54) ■ 



Fertilizer inspection, C. D. Woods and J. M. Bartlett {Maine Sla. Bid. 81, pp. 

 65-80). — This l»ulletin contains analyses of 150 brands of fertilizers (manufacturers' 

 samples) licensed before March I, 1902, with a summary of the chief provisions of 

 the State fertilizer law. 



Analysis of commercial fertilizers sold in Maryland, 11. B. jVIcDonnell et al. 

 {Mariihuid A(j)\ Col. (Juart., 1902, No. 15, pp. 51). ^-X report of the results of inspec- 

 tion of fertilizers, September, 1901, to January, 1902, inclusive. 



Fertilizer inspection in Massachusetts, C. A. Goessmann {Massarluit^dtf^ Sla. 

 Bui. 81, pp. 20). — This bulletin includes analyses of fertilizers sent to the station for 

 examination, of licensed fertilizers collected by the agent of the station during 1901, 

 and of Paris green; instructions regarding sampling of fertilizers and to manufac- 

 turers, etc. ; a discussion of trade values of fertilizing ingredients; and a l)rief account 

 of experiments with manure preservatives (.see p. 1028). The fertilizing materials 

 examined included wood ashes, limekiln aslies, cotton-seed meal, bone, fish, tankage, 

 Thomas slag, jadoo fiber, dried and jiulverized rockweed, mill waste, sheep fertilizer, 

 milk casein, Ijesides mixed fertilizers and soils. 



Fertilizer inspection in North Carolina, B. W. Kil(;oke {Bid. Norlh Carolina 

 Bd. Agr., 23 {1902), No. 3, pp. 3-26). — The names and guaranteed composition of 

 fertilizers registered for 1902, and analyses and valuations of 78 samples, of fertilizers 

 examined during the spring of 1902, with the usual explanations regarding freight 

 rates, valuation, etc. 



Analyses of commercial fertilizers, J. 11 amiiton aixl W . Fihoar {Pnuiiojlrania 

 Dfpl. Atjr. Bnl. 89, }>p. 195). — This bulletin c((ntains the text of the fertilizer law of 

 Pennsylvania, notes on valuation, a discussion of the composition of raw materials 

 and the cost of fertilizer constituents, and tabulated analyses and valuati(_)ns of 761 



