By Edward Solly, Esq. 



85 



could be seen in their size or appearance, yet the produce varied 

 greatly, for on comparing the effect produced, it appears that the 

 sulphate produced about twice the effect of the phosphate ; and 

 the muriate about twice as much as the sulphate. The following 

 table exhibits the relative effect produced by each manure, on the 

 tubers as well as on the haulm, the weight of the green haulm 

 may readily be calculated by reckoning 100 lbs. of the green for 

 every 1 1 lbs. of the dry plant. 





Whence 













ll" 7*109 





lT C 4'l05 









Sulphate of Lime 

 Sulphate of Potash . 

 Phosphate of Lime . 









1 66 



. 13 99 



5 96 

 9 





Sulphate of Magnesia 



13 19 ^4 



2 11 97 







8 71 





M U u£t?of^Potash° nia 



15 55 



3 1 108 

 3 12 58 







11 35 







15 2 72 











3 109 



Shortly after this experiment was commenced, three other squares 

 of bread fruit Potato, in another part of the garden, were manured 

 with Carbonate of Ammonia, Nitrate of Ammonia, and Muriate of 

 Lime. The soil where these substances were applied, was richer, 

 than where the above described experiments were made ; and the 

 fact that the salts were applied rather late, renders it impossible to 

 compare the produce of the two experiments. The Nitrate and 

 Carbonate of Ammonia, produced far less effect either on the haulm 

 or tubers, than the other salts of Ammonia, which were applied to 

 the plants in a younger state. The Muriate of Lime did not 

 exert much influence on the growth of the tops, but it increased 

 the yield of tubers nearly one fourth. 



A third series of experiments was made with Peas. Twelve 

 squares were sown with Blue Prussian Peas, on the 20th of March 

 and on the 19th of April the plants being about 3 inches high, 

 they were manured with the same series of manures as had been 



