17 
Char of Loch Rannoch, who subsist almost entirely on the 
daphne pulix. The smelt, and some of the white fish also, 
may be the link in the chain which will bind the land-locked 
salmon to our northern lakes, and prove a very disturbing 
weight in the scales on the side of the upper proprietors on 
waters now tenanted by the migratory Salmonidae. I have 
only just commenced the construction of a botanical pond 
to enable me to study water plants as herbage for mollusce, 
shelter for grammari, and the natural production of myriads 
of ontromostrica. On the sea-shore of the Western High- 
lands if the kelp be not regularly cut, or in other words 
rudely cultivated, for cutting is most assuredly a process in 
cultivation, the whelks and bukies decrease on account of 
the want of the young tender shoots of seaweed, and the 
fishing in the neighbourhood is sensibly diminished. 
From this it is easy to understand what a great future 
may be opened out by the systematic culture of water 
plants in our inland waters. 
Food limits the culture of non-migratory Salmonidae, 
therefore our study must be where to grow it, how to grow 
it, when to grow it, and what to grow. In lakes some 
shoal swimming fish is essential to the growth of the large 
species of non-migrating Salmonidae. Since the Char have 
disappeared from Lochleven in the first quarter of the pre- 
sent century, the ten pound Trout in that loch have passed 
into the realms of romance. 
Acclimatization here steps in ; either the freshwater Smelt 
of America or our own Osmerus eperlanus, which I have 
successfully hatched and am now rearing in fresh water, 
if introduced into a Highland loch, for instance, Loch Tay, 
would enable it to carry a very heavy crop of some of the 
larger inland species, for instance, the landlocked Salmon 
of Loch Werner in Sweden, or the S. Sebago: of America ; 
Cc 
