152 
GENERAL OBSERVATIONS ON 
in that refpeft alfo. However that may be, from the uncom- 
mon vigour of the Vines at this place, I have been led into a 
belief of the utility of this practice. But let me at the fame 
time obferve, that I have always applied this powerful manure 
(if I may fo call it) with great caution. I have found the be- 
ginning of winter the moft proper time for uling this kind of 
manure ; and then I only venture to give two or three plen- 
tiful waterings, fearing that if this were to be applied either in 
the fpring or the fummer, or even in too great quantities, it 
might tend, from its great power, to caufe the leaves of the 
Vine to change from a green to a yellow hue. I offer this, 
however, only as a probable fpeculation, for I don’t certainly 
know that it would produce that effecft, though ufed in fum- 
mer. It feems, however, mofl reafonable to fuppofe, that it 
Ihould be applied when the roots of the Vine are in a flate of 
inadtion, as then a winter’s rain and frofl may, probably, con- 
tribute to qualify it, and to incorporate it with the foil. 
ON 
