262 GRAYLING. GhagTve 
Nil. Tbe Go Ro ONG es 
Oup.adracs. Elian. de an. lib. ~ Icth. 187. Raii fyn: pife. 62, 
xiv.c. 22. Umbra <Aufonii Coregonus maxilla {uperiore 
Mofella. go. longiore, pinna dorfi officu- 
Thymalus, Thymus. Salvian. Jorum viginti trium. Arted. 
81. Belen. 276. Jvnon. 20. 
Thymus, Umbra fluviatilis. Salmo Thymallus. Lin. f/f. 
Rondel. fuv. 187, 172. Gef- -  §%2+ Gronow. Zoopb. No. 375+ 
ner pife.132. Afch. Kram. 390. 
A Grayling, or Umber. Wil. 
HE grayling haunts clear and rapid ftreams, 
and particularly fuch that flow thro’ mounta- 
nous countries. It is found inthe rivers of Derby- 
foire; in fome of thofe of the north’; in the Tame 
near Ludlow; and in the Lug, and other ftreams near 
Leominfter : itis alfo very common in Lepland, the 
inhabitants make ufe of the guts of this fifth inftead 
of rennet, to make the cheefe which they get from 
the milk of the reindeer *.  -- 
It is a voracious fith, rifes freely to the fly, and 
wall very eagerly take a’bait. It isa very fwitt fwim- 
mer, and difappears like the tranfient paflage of a 
fhadow, from whence we believe is derived the name 
of Umbra. 
Effugien/que oculos celeri levis UMERA natatu**. 
The Umbra fwift efcapes the quickeft eye. 
Thymalus and Thymus, are names beftowed on it on 
account of the imaginary fcent, compared by fome 
* Fhra Lap. 109. ** Aman. Acad. iv. 159. 
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