SUPERPHOSPHATE OF LIME. 175 



part of tlie field being" somewliat drier, it is difficult to 

 say. 



The field was a clay loam on the London clay, and was 

 partially drained. 



I also supplied various ag-riculturists in my neig'hbour- 

 liood with vitriolized bones, prepared in the proportion of 

 4 bushels (180 lb.) of bone-dust, and GO lb. of concentrated 

 sulphuric acid, which I recommended to be applied to an 

 acre when no other manure was emploj-ed. The result in 

 nearly every instance has been decidedly favourable. 



Mr. W. Gater, of Westend, employed it at the rate of 

 2 bushels of bones to the acre, in addition to a fair dressing' 

 of farm-yard dung'. On a portion of the field the dung* was 

 used alone. The former was fit for the hoe several days before 

 the latter, and on weig'hing- portions of each in Januar}' last, 

 there was a superiority of 5 tons to the acre in favour of 

 that portion which had received the addition of sulphated 

 bones. 



Mr. J. W. Clark, of Timsbury, used the manure which I 

 supplied him with in the same proportions also in addition 

 to farm-yai'd dung', and the Swedes proved the best on his 

 farm. The amount of vitriolized bones used per acre varied 

 in difi^erent parts of the field, and the g'oodness of the crop 

 precisely corresponded to the quantity applied. 



Mr. J. Blundell, of Bursledon, also used it at the rate of 

 4 bushels of bones to the acre with 6 bushels, of ashes in 

 competition with nig-ht-soil and ashes. On visiting- his farm 

 a few weeks afterwards, I noticed, at several fields' distance, 

 the superiority of one portion of the field, which I found 

 was that on which the vitriolized bones had been used. 

 The dampness of the season, however, proved so favourable 

 to the development of the other manure, that, on weig'hing' 

 them in December, the latter was found about half a ton 

 per acre heavier ; the expense, however, was nearly double. 

 The weig'ht of the crop was between 17 and 18 tons per 

 acre. I have no doubt that if Mr. Blundell had applied 20 

 bushels of ashes to the acre, instead of G, with the sulphated 

 bones, tlie result would have been much more favourable. 

 When we bear in mind the large amount of potash con- 

 tained in the crop, it must be very evident that it is of im- 

 portance to supply a g'ood quantity of ashes which contain 

 a fair proportion of potash ; I would therefore recommend 

 that 20 bushels of ashes per acre, at least, should always be 

 employed. 



