By Edward Solly, Esq. 71 



name of Petre salt, and costing about 4s. per cwt. The produce 

 was 



The proportion of grain to the whole crop therefore was as 

 2272 to 10000. One thousand seeds weighed 712 grains. The 

 standard measure full, weighed 4233 grains; hence the bushel 

 would weigh 60^ lbs. 



During the first few weeks after the application of this Salt, no 

 effect whatever was perceptible ; the plants looked poor, they 

 grew up thin, and the blades were small, but they were stiff and 

 the straw strong. When the wheat came into ear it looked far 

 better than it had previously done, and the stiffness of the straw 

 became more evident, for when those which had received Aramo- 

 niacal manures were all laid, the plants in this square were not laid 

 at all. During the filling of the grain, a very remarkable effect 

 was observed ; the straw ripened and became of a bright yellow 

 colour some time before that in most of the surrounding squares 

 began to change. This effect which was very distinct and marked 

 was perceived only in those squares which had been manured with 

 Muriate and Sulphate of Potash, viz. 11, 12, 21 and 22, but in the 

 two latter cases the appearance was less distinct than in those 

 to which the Muriate of Potash had been applied. 



12. Muriate of Potash and Silicate of Potash. These sub- 

 stances were applied at the rate of 3 cwt. of the former and 1| cwt. 

 of the latter per acre. The produce was 



The proportion of grain to the whole crop therefore was as 

 1033 to 10000. One thousand seeds weighed 619 grains. The 



