Clafs IV. SAIS MMO N, 241 
the fake of depofiting its fpawn in fecurity, in the 
gravelly beds of rivers remote from their mouths. 
There are fcarce any difficulties but what they will 
overcome, .in order to arrive at places fit for their 
purpofe: they will afcend rivers hundreds of miles, 
force themfelves againft the moft rapid ftreams, and 
{pring with amazing agility over cataracts of feveral 
feet in height. Salmon are frequently taken in the 
Rhine as high up as Bafil; they gain the fources of 
the Lapland rivers* in fpite of their torrent-like 
currents, and furpafs the perpendicular falls of 
Leinflip**, Kennerth+, and Pont aberglaftynt; thefe 
jaft feats we have been witnefs to, and ieen the efforts 
of fcores of fifh, fome of which fucceeded, others 
mifcarried during the time of our ftay. 
It may here be proper to contradict the vulgar 
error of their taking their tail in their mouth when 
they attempt to leap; fuch as we faw, {prune up quite 
ftrait, and with a ftrong tremulous motion. 
: Other particulars relating to the natural hiftory of 
this fith, we fhall relate in our accounts of the fifheries, 
either from our own obfervations, or from fuch 2s 
have been communicated to us from different places : 
the fulleft we have been favored with is from Mr. 
Potts, of Berwick, to whom the publick is indebted 
for the following very curious hiftory of the falmon 
fifhery on the Tweed, 
* Scheff. Lap. 139. 
** Near Dublin. 
+ On the Zivy in South Wales, which Michael Drayton cele- 
brates in his Po/olbion on this account. 
t Amidit Snowdon pba a wild {cene in the ftyle of Selva- 
tor Rofa. 
At 
Salmon 
leaps. 
Toweed 
fifhery, 
