Experiments with Peruvian Guano. 

 Table II. 



215 



Although the results so far obtained do not show any beneficial 

 effect from the admixture of the sulphuric acid with the guano I 

 propose to repeat the experiments with roots again this year, and 

 to extend the trial to other crops. 



Taking into consideration both the cost of the acid and the ex- 

 penses of mixing, the preparation of Peruvian guano, as above 

 described, would probably add nearly 20 per cent, to the cost of 

 the nitrogen and phosphates it contains. Unless, therefore, the 

 process be found to augment the efficacy of the guano in more 

 than that proportion, there would be no gain to the farmer in 

 using the mixture instead of the guano in its natural condition. 

 It is obviously very important, therefore, to give the matter a fair 

 and careful trial. 



Rothamsted, February, 1865. 



2. — Ex-periments on the Artificial Fecundation of Wheat. 

 By J. B. Lawes, F.R.S., F.C.S. 



In Part I. of the ' Journal of the Royal Agricultural Society ' 

 for 18G4; (p. 258) there is an abstract of an account given in 

 the ' Journal d'Agriculture Pratique,' of methods proposed by 

 M. D. Hooibrenk for increasing the produce both of corn and 

 fruit-trees by means of a process of artificial fecundation. The 

 value of M. Hooibrenk's discovery is said to have been verified 

 by a Commission appointed by the Minister of Agriculture of 

 France. The increase recorded as due to the process was (if 



