his Grace's gardener. For the purpose of determin- 

 ing as far as possible the nutritive powers of the 

 different species, equal weights of the dry grasses or 

 vegetable substances were acted upon by hot water 

 till all their soluble parts, were dissolved ; the solution 

 was then evaporated to dryness by a gentle heat in a 

 proper stove, and the matter obtained carefully weigh- 

 ed. This part of the process was likewise conducted 

 with much address and intelligence by Mr. Sinclair, 

 by whom all the following details and calculations are 

 furnished. 



The dry extracts supposed to contain the nutri- 

 tive matter of the grasses, were sent to me for chemi- 

 cal examination. The composition of some of them 

 is stated in the last table of Chap. III. I shall offer a few 

 chemical observations on others at the end of this 

 Appendix. It will be found from the general conclu- 

 sions, that the mode of determining the nutritive 

 power of the grasses, by the quantity of matter they 

 contain soluble in water, is sufficiently accurate for all 

 the purposes of agricultural investigation. 



