MANURES. 53 



three and a half feet apart each away ; the bone was mixed 

 partially with the soil. 



Lot No. 2 was manured with the flour of bone from Walton's 

 Mill in Salem, the cost of which was three cents per pound, and 

 the same quantity applied as in No. 1. 



On lot No. 3 I put the same quantity of bone from Day's 

 Mill in "West Boxford, costing four cents per pound. 



Lot No. 4 was manured with compost manure, at the rate of 

 six cords to the acre, spread on and partly covered with a small 

 plough. I estimated the manure worth $10 per cord when 

 put on. 



Lot No. 5 was manured the same as No. 4, with the addition 

 of a small quantity of bone put in the hill ; each lot contained 

 512 hills on about one-ninth of an acre, and the land is nearly 

 level and of uniform quality. It all received the same care and 

 cultivation during the season. 



No. 1 produced llf bushels of ears of good sound corn, and 

 5£ bushels poor corn ; total, 17^ bushels. 



No. 2, 10 bushels good, 5|- poor ; total, 15] bushels. 



No. 3, 8 bushels good, 6 poor ; total, 14 bushels. 



No. 4, 17.V bushels good, 2 poor ; total 19^ bushels. 



No. 5, 18]- bushels good, If poor ; total, 20| bushels. 



From the above it will be seen that the cost of the manure 

 for No. 1 was $15 per acre, and the yield was at the rate of 40 

 bushels of shelled corn per acre, without the poor corn. 



No. 2, cost of manure, $15 per acre, 35 bushels corn. 



No. 3, cost of manure, $20 per acre, 28 bushels com. 



No. 4, cost of manure, $70 per acre, 62 bushels corn. 



No. 5, cost of manure, $76 per acre, 65 bushels corn. 



It will be seen from the above that manure for a bushel of 

 corn cost on No. 1, 37* cents ; No. 2, 40.]- cents ; No. 3, 67|- 

 cents ; No. 4, $1.10 ; No. 5, $1.10]-. 



Perhaps I should have stated more particularly the kind of 

 bone used. Mr. Breed's, as he informed me, was the raw bone, 

 crushed in a quartz mill. 



Mr. Walton's was made from bones that had been used at the 

 Lowell Print Works, and all the gelatine extracted. 



Mr. Day's, had been steamed to extract the gelatine. 



