By Edward Solly, Esq. 



41 



soil replaced; the plants were subsequently earthed up in the 

 ordinary manner. The nature of the manures applied, the quantity 

 of produce obtained from each plant, and the composition of the 

 tubers, &c. are as follows : — 



No. 1. Not manured at all, the produce was, large tubers 7 lbs. 

 3oz. t small tubers 13 oz., total 8 lbs. The dry straw or haulm 

 weighed 3270 grains. The tubers and haulm contained 



cilage, Resin, Fatty re 



No. 2. Manured with Rotten Dung at the rate of five tons 1 per 

 acre. The produce was, large tubers 1 1 lbs. 2 oz., small tubers 

 6oz., total 11 lbs. 8oz. The dry haulm weighed 2158 grains. 

 The tubers and haulm contained 



Tubers and Haulm. 



No. 3. Manured with Gypsum, at the rate of 2 cwt. 96 lbs. per 

 acre. The produce was, large tubers 8 lbs., small tubers 4 oz., 

 total 8 lbs. 4oz. The dry haulm weighed 1013 grains. The 

 tubers and haulm contained 



No 4. Manured with Nitrate of Soda at the rate of 1 cwt. 

 48 lbs. per acre. The produce was, large tubers 8 lbs. 1 1 oz., small 

 tubers 5 oz., total 9 lbs. The dry haulm weighed 1869 grains. 

 The tubers and haulm contained 



No. 5. Manured with Salt Cake (Sulphate of Soda) at the rate 



