752 THAKSACTIOXS OF THE AmERICAX INSTITUTE. 



corn per acre, or the same as ISTo. 1, the ashes appearing to destroy 

 the ettect of the manure applied in the preceding winter. Tlie 

 quality of the best corn on the two preceding pieces was not first- 

 rate. No. 7. Superphosphate. Tliis wae made by first burning the 

 bones, then pulverizing them as finely as possible, and then dissolving 

 them with sulphuric acid. The proper proportions are eight pounds 

 of burnt bone to seven pounds of acid, the acid to be diluted with an 

 equal weight of water. This I made myself. It will require to be 

 mixed with either muck or gypsum to dry it so that it can be handled. 

 Yield of piece, thirty-five bushels, thirty-two bushels sound and three 

 bushels soft corn, or at the rate of eighty bushels of sound corn per 

 acre ; a gain over No. 2 of twentj'-two and one-half bushels, and over 

 No. 1 of forty 'five bushels of sound corn per acre. This was used at 

 the rate of about 125 pounds per acre, at a cost of about five dollars. 

 The corn and superphosphate were dropped in the hill together and 

 covered. No. 8. Horn dust. This was procured from a comb factory 

 and applied as in No. 7. Yield of piece, twenty bushels, ten and 

 one-half bushels sound and nine and one-half bushels soft corn, or at 

 the rate of only twenty -six bushels per acre, being nine busliels'^per 

 acre less than No. 1, and so much worse than nothing. Nos. 3 and 7 

 bad about twice the quantity of stalks there were on No. 2, and 

 No. 4 about one-half more than No. 2. Nos. 3, 4 and 7 were cut 

 September 28, and were ripe. The others were cut October 13, 

 and were not ripe at that time. It will be seen that the pou- 

 dr»tte and superpliosphate, witli the small quantity of manure 

 applied the fall previous, gave an increase of about fifty bushels per 

 acre, M'hile some of the others were worse than nothing. The yield 

 is not large on any of the pieces, as our season was very wet and cold, 

 and the ground so wet the corn could not be properly cultivated. 

 Now, I have no poudrettc or superphosphate for sale, so no one need 

 write to me for any. I give the process of manufacture, so any . 

 can make it if he wishes, and know what he is applying, and not • 

 chase dead horses with a little gypsum mixed with the flesh forsu^ 

 phosphate, as 1 did. 



Peanut Culture. 

 Mr. C. Grove, Middlesex, Penn., wuuld liave information on this 

 sul)ject, and thinks an answer might " confer a favor on many youth- 

 ful readqrs of the reports." L. Dow, Salina, Ky., and two or three 

 others evinced similar interest. 



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