CALCAREOUS MANURES-PRACTICE. 75 



s q not marled nor manured — produced on a quarter acre, (No. 4,) of 

 Soft and badly filled corn, 



Bush.P. 



3 busliels, - or per acre 1 2. 



q r and r p, marled 800 bushels (45 per cent.) by thme mea- 

 surements of different pieces — 



Quarter acre (No. 1.) 5 bushels, very nearly, or per acre 19.85 



Eighth (No. 2) 2.3^ { average ) 22.2 



Eighth (No. 3)3.1i^ 24. H ] 27. 



s t manured at 900 to 1 100 bushels to the acre, of which, 

 Quarter acre (No. 5) with rotted corn stalks, from a winter 



cow-pen, gave 5.2^ 22.2 



Eighth (No. 6) with stable manure, 4.1 1 - - - 35.2 



Eighth (No. 7) covered with the same heavy dressings 



of stable manure, and of marl also, gave 4.2 36. 



p w, marled at 450 bushels, brought not so good a crop as 

 the adjoining r p at 800. 



The distance was 5^ by 3 J feet. Two of the quarter acres were mea- 

 sured by a surveyor's chain, (as were four other of the experiments of 

 1824,) and found to vary so little from the distance counted by corn rows, 

 that the difference was not worth notice. 



1825. In wheat, the different marked pieces seemed to yield in compari- 

 son to each other, proportions not perceptibly different from those of the 

 preceding crop — but the best not equal to any of the land marled before 

 1822, as stated in the 1st, 2d and 3d experiments. 



1827. Wheat on a very rough and imperfect summer fallow. This was 

 too exhausting a course (being three grain crops in the four shift rotation,) 

 — but was considered necessary to check the growth of bushes that had 

 sprung from the roots still living. The crop was small, as might have been 

 expected from its bad preparation. 



1828. Corn— in rows five feet apart, and about three feet of distance' 

 along the rows, tiie seed being dropped by the step. Owing to unfavorable 

 weather, and to insects and other vermin, not more than half of the first 

 planting of this field lived— and so much replanting of course caused its 

 product to be much less matured than usual, on the weaker land. All the 

 part not marled (and more particularly that manured) was so covered by 

 sorrel, as to require ten times as much labor in weeding as the marled 

 parts, which, as in every other such case, bore no sorrel. October 15th, 

 gathered and measured the corn from the several spaces, which were 

 laid off" (by the chain) as nearly as could be, on the same land as in 1824. 

 The products so obtained, together with those of the previous and sub- 

 sequent courses of tillage, will be presented below in a tabular form, for 

 the purpose of being more readily compared. 



On the wheat succeeding this crop, clover seed was sown, but very 

 thinly, and irregularly. On the parts not marled, only a few yards width 

 received seed, which the next year showed the expected result of scarcely 

 any living clover, and that very mean. On the marled portions, the growth 

 of clover was of middling quality. Was not mowed nor grazed, but seed 

 gathered by hand both in 1830 and 1831. 



1832. Again in corn. It was soon evident that much injury was caused 

 to the marled half 7^ n, by the too great quantity applied. A considera- 

 ble proportion of the stalks, during their growth, showed strongly the 

 marks of disease from that cause, and some were rendered entirely barren. 

 A few stalks only had appeared hurt by the quantity of marl in 1828. On 

 the lightly marled piece, u> p, and also on w t, where the heaviest marling 



