EXPERIMENTS ON CLOVER SUGGESTED. 



127 



red clover, sainfoin, and lucerne. This clover it is said to cause 

 to stock out, or tiller ; and if strewed on young peas, as they are 

 looking up, to cause the production of larger crops. For all 

 leguminous crops it is praised, and by many for Indian corn and 

 for hemp. It is better to sprinkle it on the green leaves of 

 clover on a calm afternoon. On light dry soils it does best ; on 

 cold, heavy, or wet land, on such as is exhausted, or which 

 contains little organic matter, its effects are small. The gar- 

 dener may apply it to his strawberries, which, in the United 

 States, are greatly improved by it. 



2. The scientific man can make no rigorously accurate 

 experiment in duplicate or triplicate the result of which will 

 not be an acquisition. But he may 



a Compare the effects of gypsum in its different states upon 

 red clover, thus 



b Applied at different periods of the spring. In a small 

 experiment by Korte, the produce of clover was greater when 

 the gypsum was laid on at the end of April than at the end of 

 March. The same was the case with the American experiment 

 quoted in the preceding section. It is desirable, however, that 

 this result should be tested by repeated careful trials. 



c Applied to the soil itself, or sown along with the seed, or 

 spread upon the leaves early and late in spring, thus 



