THE SILURUS GLANIS. 179 
article of food. On the other hand, the wels recom- 
mends itself for acclimatisation in more than one 
respect. It may be procured in large numbers from 
the numerous lakes in Mecklenburg and Northern 
Prussia, at the place indicated in the beginning of 
this paper; the price of 1000 young fish would not 
exceed £15. Its tenacity of life insures an easy trans- 
port during the two or three days’ journey, without 
any considerable loss, if young examples, not above 10 
inches in length, be selected, and the transport be 
made during the cooler part of the year. The place 
for its reception must be judiciously chosen, but 
there are numerous lakes in the north of England, 
Wales, Scotland, and Ireland, whose physical features 
are in accordance with those of its native place; and 
we sincerely hope that the few specimens which are 
now in possession of the Society of Acclimatisation 
may be the forerunners of a more extensive immigra- 
tion, which might draw yet another presumption in 
favour of success from the fact that all the immigra- 
tions of animals which are known to have taken 
place in a state of nature have proceeded from east 
to west. 
A. G. 
