EXTRACTS FROM PROCEEDINGS. 



Ixxi 



amounted to about 60 per cent, of the whole produce. Dressed 

 with salts of ammonia or nitrate of soda, and other purely nitro- 

 genous manures, the herbage yielded from 70 to 80 per cent, of 

 the whole weight of produce in graminaceous plants ; and in some 

 instances in which an abundance of both nitrogenous and mineral 

 manures were employed together, the weight of the graminaceous 

 plants in the whole produce amounted to nearly 95 per cent. 



The effect of nitrogenous manures in encouraging the growth of 

 true grasses, and raising the weight of graminaceous produce and 

 the corresponding diminution of the weight of the leguminous and 

 miscellaneous plants in the produce, was strikingly exemplified in 

 these experiments. 



On the other hand, it was found that purely mineral manures, 

 such as salts of potash and phosphate of lime, favoured materially 

 the growth of the clover tribes, and greatly increased the per- 

 centage by weight of the leguminous plants in the whole produce 

 of the permanent pasture. 



A wish having been expressed by several members of the Com- 

 mittee to inspect the interesting and highly important experi- 

 ments which for a succession of years have been carried out and 

 are annually in progress at Eotham stead Park, Mr. Lawes kindly 

 issued an invitation, of which several of the Members were able to 

 avail themselves. 



The remarkable character of the results obtained in experi- 

 ments on permanent pasture, and other no less interesting results, 

 having reference to the growth of wheat, barley, beans, and other 

 crops, highly impressed the visitors with the importance of the 

 experimental inquiries instituted at Eothamstead in relation to 

 many physiological and horticultural problems. 



At a subsequent Committee Meeting it was agreed to call to- 

 gether the Chemical Sub- Committee, who, regarding the coopera- 

 tion of botanists and others interested in vegetable physiology, 

 were joined by Dr. Masters, Dr. Hogg, Mr. Murray, Major Trevor 

 Clarke, and Mr. Miers, Dr. Hooker and Mr. Bentham express- 

 ing regret at being unable to attend- the Meetings of the Sub- 

 Committee. 



Accordingly the Sub-Committee met on Thursday, June 18th, 

 the following Members being present : — 



Professor Abel. Dr. Gilbert. 



Mr. a. P. Wilson. 

 Dr. Masters. 



A. Murray. 

 Dr. Yoelcker. 



