Avools(!Ourin{]^ works, plaster, barnyard inamire, roekweed, seaweed, 

 Iceland moss, and jiigeon manure. 



One sample of cottonseed meal was found to be "adulterated with 

 rice meal, which is harmless, but reduces the value of the meal either 

 as a food or fertilizer, by $i or ^o a ton. The color of the meal was 

 rather lighter than pure meal, but the adulteration is not likely to be 

 detected without microscopic or chemical examination." 



Concerning the mixed fertilizers it is stated that " in five cases 

 the valuation [of superphosphates] exceeded the cost. Leaving out 

 of account three analyses in which the cost exceeded valuation by 

 considerably more than 50 per cent, the average cost of 62 nitrogenous 

 sui)orphos[)hates was $33.80 and the average valuation $28.57. The 

 ditference is $5.23 and the percentage difference 18.3. * ♦ * - 



" The average cost of 33 special manures has been $39.18 and the 

 average valuation $32.90. The difference between the cost and valua- 

 tion has l)eeu $0.28 and the percentage difference 19. 



"This year the special manures as a class have been higher priced 

 and more concentrated than the other nitrogenous superphosphates, 

 but not, as heretofore, more economical to purchase." 



Review of the fertilizer market. — A table is given with explanations, 

 showing the fluctuations in the wiiolesale prices of nitrogen, potash, 

 and phosphoric acid in a number of standard materials for each month 

 from July, 1887, to December, 1890, and. two other tables facilitating 

 the calculation of the cost of nitrogen per pound from the cost of 

 ammonia per unit or per pound of commercial sulphate of ammonia, as 

 given in the market quotations. 



lu general, nitrogen in blood, azotiu, nitrate of soda, and fi.sh scrap have fallou 

 decidedly in price during the year. The nitrogen of sulphate of aninionia has, on the 

 other hand, risen considerably. 



Charleston rock is considerably lower, bonoblaok somewhat lower; bone has 

 remained constant through the year. 



Acid phosphate made from South Carolina rock is considerably lower than at the 

 opeuing of the year. 



Muriate of potash, double manure salt, and kainit are quoted about as they have 

 been through the year, but high-grade sulphate is very considerably lower. 



Report of Mycologist, R. Thaxter, Ph. D. (pp. 80-113, plates 3, 

 figs. 3). — Potato scab (pp. 81-95). — This is a detailed report of observa- 

 tions previously sumnuirized in Bulletiu No. 105 of the station (see Ex- 

 periment Station Record, vol. ii, p. 490). The substance of the present 

 article was also presented in a i)ai)er read before the section on botany 

 of the Association of American Agricultural Colleges and Experiment 

 Stations, at Champaign, Illinois, November 12, 1890. Tlio topics treated 

 are. Theories of the Origin of Potato Scab, General Characters of the 

 Disease and of the Scab Fungus when Cultivated, Life History of the 

 Scab Fungus, Inoculations Made with the Scab Fungus, A Comparison 

 of "Deep" and "Surface" Scab, and The Botanical Relations of the 

 Scab Fungus. Specimens of potatoes affected with the ordinary deep 



