TRACTS ON VARIOUS SUBJECTS, &c. 51 



that I resolved to try the effects of manures ; and, accordingly, a 

 portion of the transplanted mangel wurzel, being 130 plants, 

 was left witliout manure : 81 plants had a top dressing of hog's 

 dung and ashes, at the rate of about 30 loads, or 360 bushels per 

 acre, and (he remaining portion, containing 48 plants, was 

 treated in the same manner with Guana, or sea-fowl dung, in 

 the proportion of only 35 bushels per acre. 



If I had predetermined to report on these experiments, I 

 should have made them in a more regular form ; that is, I should 

 have allowed an equal number of plants to each ; but under the 

 circumstances which have led to them, the result shall be given, 

 exactly as they were recorded at the periods of cutting the leaves, 

 and when the experiments were completed. 



The three first cuttings not having at the time attracted my 

 notice, were not weighed ; I have therefore taken them in the 

 following Table, at the proportions of the 4th, 5th, and 6th 

 cuttings, which is a fair presumption, as they are in general, 

 most productive in the early stages of their growth. 



