0. E. S. Lib^ahy. Co*. 2. T^ §J\t ^onnettot Mrkultoal experiment Station, ft©* BULLETIN No. 89. OCTOBER, 1886. Analyses of Superphosphates and Special Ma:ntjres. In the following tables will be found all the analyses of these two classes of fertilizers which have been made at this Station during the present year on samples drawn by our own agent from goods which were in dealers' hands. The Station assumes full responsibility both for the accuracy of the sampling and the chemical analysis only on such samples. In a large number of cases more than one sample has been drawn of the same brand of goods. For example, three samples were di-awn of the sixth fertilizer given in the table: Chittenden's Fish and Potash, one from the stock of Mr. Eaton of Plainvilie, one from Mr. Fowler of Milford, and the third from Warner & Son of East Haddara. The analysis No. 1799 was made on a mixture of equal parts of these three samples and may be believed to represent somewhat more fairly the average composition of the goods than an analysis made on a single sample. The last column of the table of analysis is "percentage difference between cost and valuation." Its significance and the method of calculating it may be seen by noticing as before the sixth analysis, in the table, No. 1799. Here the cost is $35, the valuation is $32.08 and the difference between them is $2.92. Now by multiplying this difference by 100 and dividing it by the valuation, $32.08, we get the percent- age advance of selling price over valuation, which advance should represent the costs and profits of the manufacturer in converting the raw materials into a mixed fertilizer, selling it and collecting on his sales. Certain brands of superphosphates on which an analysis fee has been paid do not appear in these tables, for Station agents have not found them on sale in the places which they have visited for the purpose of collecting samples and the agents who have had these on sale have failed to report them to the Station as the law requires. In such cases the samples sent by the manufacturers themselves in compliance with the law have been analyzed and the results will appear in the annual report. -X V, o I— I < H QQ K w Eh >* P5 Q ►H cc o l= Q O w Ph M Ph m 1= O C5 O 6 o I2i S-i -^ CD O ©—9 a) bcrt V * 'i'2' pq Ph 1 — ' P co a/ r-i P3 ° o"Ph J S a -2 S [< ? fe cd t; £ to _2 °s o « * ^ a - ~» fe> * & g s . 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