128 EFFECTS ON ACID CLAY SOIL. 



The corn on each of the measured spaces was cut down, and put 

 in separate shocks and on Nov. 25th, when well dried, the parcels 

 were shucked and measured, before being moved. We had then 

 been gathering and storing the crop for more than fifteen days ; 

 and therefore these measurements may be considered as showing 

 the amount of dry and firm grain, without any unusual deduction 

 being required for shrinkage. 



Bush. Pks. 

 A (half acre) made 7i bush, of ears, or of grain to the acre, 7 1 



D (half acre) 16f 16 3 



E (quarter acre) 11 22 



The sloping surface of the side E, prevented water from lying 

 on it, and therefore it suffered less, perhaps not at all, from the 

 extreme wetness of the summer, which evidently injured the growth 

 on A and D, as well as of all the other level parts of the field. 



[1832. The field in wheat. 



1833. In clover, which was grazed, though not closely, after it 

 had reached its full growth. 



1834. Corn, a year earlier than would have been permitted by 

 the four-shift rotation. The tillage was insufficient, and made still 

 worse by the commencement of severe drought before the last 

 ploughing was completed, which was thereby rendered very labori- 

 ous, and imperfect withal. The drought continued through all 

 August, and greatly injured the whole crop of corn. 



Results continued. October 22d. Marked off by a chain half 

 an acre within the space A (8 by 10 poles) as much in D, and a 

 quarter acre (10 by 4 poles) in each of the other three sides C, B, 

 and E, having each of the last four spaces as near as could be to 

 the outlines of the space A. The products carefully measured (in 

 the ears) yielded as follows : 



A, not marled, yielded 6 bush. 0? peck of grain, to the acre. 



D, majled, " 19 " 3 " " 



E, do. 20 1 " 

 C, do. " 20 2 " 



B, do. " 20 1} 



In comparing these products with those of the same land in 

 1831, stated above, it should be remembered that the corn formerly 

 measured was dry, while that of the last measurement had yet to- 

 lose greatly by shrinking. As, after early gathering, the corn from 

 the poorest land of course will lose most by drying, and as the 

 ears on A were generally very defective and badly filled, if the 

 measurement had been made in the sound and well dried grain of 

 each parcel, the product of A could not have exceeded one-fourth 

 of that of the surrounding marled land, and probably was less. 



But though these differences of product present the improvement 

 caused by marling in a striking point of view, this close and stub- 



