SECRETARY'S REPORT. 45. 



ficially. while in No. 14 the manure harrowed in gave the next 

 largest product, surface aj)i)licati()u the next, and nuMliuni dejjlh 

 the least, suggesting the idea that there might have been some 

 extraneous influence in oi)cration, aside from the depth, or 

 perhaps an unperceivable unevenncss in the quality of the several 

 plots, giving to No. 1 an undue advantage. 



Those which gave the greatest product from manure at a 

 medium depth, were Nos. 1, 2, 4, 5, 10 and 12. Nos. 1, 2, 4, 10 

 and 12 were retentive soils, and No. 5 a light one. Those which 

 gave the largest result from manure harrowed in, were Nos. 3, 

 G, 9 and 11. Nos. 3, 9 and 11 were retentive, and No. 6 a 

 leachy soil. Those which gave the best result from manure 

 applied on the surface, were Nos. 7 and 13. No. 7.is described 

 simply as a yellow loam, but from information otherwise obtained, 

 we learn that it should be classed with the moist and retentive 

 soils. No. 13 was retentive. 



Adding the numbers together, we find that manure buried 

 deeply gave the best returns in two instances ; placed at a 

 medium depth, in six ; when harrowed in, in four; and when 

 left on the surface, in two cases. Taking the retentive soils by 

 themselves, deep ploughing of manure gave the greatest result 

 in one case, shallow ploughing in five, harrowing in three, and 

 surface application in two. The light soils yielded the best 

 return from one of each of the several applications, except 

 where applied on the surface. 



In this computation we have omitted the second crop of hay 

 in Nos. 2 and 14, that all might stand upon the same footing. 

 The addition of the after-math in these cases would make the 

 total product higher, but in No. 2 the relative result would not 

 be altered, while in No. 14 the order would be changed from 

 Nos. 1, 3, 4, 2 and 5, to 1, 3, 2, 4 and 5. 



The average value of manure per cord, in all the experiments 

 except No. 1, where guano was the only manure, was, on 



Plot No. 1, $4 16 



No. 2, 4 64 



No. 3, 4 78 



No. 4, 3 76 



