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TRIANDRIA DIGYNIA. 415 
by the oldeft men and farmers as the moft 
valuable grafs.. If I do not miftake the feed 
was imported; however in the fourth crop it 
began to decline, which circumftance confirms 
me in the opinion, that change of feed is ne- 
ceflaty in this {pecies. I therefore fhould con- 
fider Mr. Pacey’s Ray-grafs to be no other 
than the Lolium perenne. 
The feed he colleéts from a wild ftate, and 
fows, it improves by the change; with. this 
improved feed he fupplies his cuftomers, with 
whom it ftill further improves from the varia- 
tion of foil. ‘This procefs he repeats annually, 
and thus I would account for the fuperiority 
of the Ray-grafs for which this gentleman is 
diftinguifhed. If any gentleman or farmer will 
caufe to be colleéted a fmall quantity of the 
Lolium perenne, which grows fome miles dif- 
tant from his eftate or farm, particularly if 
he colle& it from old paftures or mountain 
grounds, and that he fows it in a part of his 
foil which is neither too rich nor too poor, 
the refult will demonftrate that the fuperior 
excellence of Mr. Pacey’s Ray-grafs depends on 
that operation, He may likewife obferve, that 
in the courfe of the fourth crop, if not re- 
Q 2 newed 
