ON RAISING GRASS SEEDS AND FORMING MEADOWB. 355 



Its properties differed from those of pyroacetic spirit ; 

 and convinced me, that prussic acid combines with al- 

 cohol. 



The pyroacetic spirit has some properties, that distin- Pyroacetic spirit 

 guish it from alcohol, ethers, and volatile oils ; and others j^j". e ° h ^ s 

 Common to it and these substances. It cannot be classed and essential 

 absolutely with either, though it is in some respects related 

 to each. 



From the action of potash and acids, it would seem, that a Contains more 

 larger proportion of carbon in its ultimate composition dis- ca ^ on than al * 

 tinguishes it chiefly from alcohol. 



A complete analysis of this substance is wanting, to make 

 us better acquainted with it. This I am proceeding to 

 attempt, in order to complete the series of researches, 

 which I proposed to myself for ascertaining its intimate 

 nature. 



IV. 



On raising Grass Seeds, and preparing Meadow Land: 

 by Mr. William Salisbury, of the Botanic Gardens, 

 Brompton and Sloane Street *. 



SIR, 



1 OBSERVE in a list of premiums offered by the Society 9 rass seeds cuI " 



of Arts, &c, which fell into my hands, that the subject slderable ex- 



of select grass seeds has engaged their attention. I have, ten *. 



therefore, taken the liberty of sending herewith a sample 



of festuca pratensis, or meadow fescue grass, which has 



been grown under my directions; it is a sample of upwards 



of twenty quarters, the produce of twelve acres of land, 



which have now been under that crop for the three last 



years. 



As the cultivation of grasses, in general, has engaged my The poa not 

 attention very particularly for the last twenty years, I have SSSlSS' 



tion. 



♦ Trans, of the Society of Arts, vol. xxvii, p. 67. The silver 

 medal was voted to Mr. Salisbury for this communication. 



Aa2 tad 



