42 



On the Inorganic Constituents of Plants, 



of 1 cwt. 48 lbs. per acre. The produce was, large tubers 13 lbs. 

 14 oz., small tubers 1 lb. 2 oz., total 15 lbs. The dry haulm 

 weighed 3301 grains. The tubers and haulm contained 



Tubers and Haulm. I Tubers. 



No. 6. Manured with Epsom Salts (Sulphate of Magnesia) at the 

 rate of 1 cwt. 48 lbs. per acre. The produce was, large tubers 

 9 lbs. 15 oz., small tubers 8 oz., total 10 lbs. 7 oz. The dry haulm 

 weighed 2099 grains. The tubers and haulm contained 



No. 7. Manured with Nitrate of Soda at the rate of 2 cwt 

 96 lbs. per acre. The produce was, large tubers 6 lbs. 12 oz., 

 small tubers 13 oz., total 7 lbs. 9 oz. The dry haulm weighed 

 1652 grains. The tubers and haulm contained 



No. 8, Manured with Salt Cake at the rate of 2 cwt. 96 lbs. per 

 acre. The produce was, large tubers 17 lbs. 1 oz., small tubers 

 none, total 17 lbs. 1 oz. The dry haulm weighed 2196 grains. 

 The tubers and haulm contained 



No. 9. Manured with Epsom Salts at the rate of 2 cwt. 96 lbs. 

 per acre. The produce was, large tubers 9 lbs. 5 oz., small tubers 

 7 oz., total 9 lbs. 12 oz. The dry haulm weighed 2006 grains. 

 The tubers and haulm contained 



