ON SOME COLL AND TIREE PLANTS. 57 
The distribution of aquatic plants on our west coast is a subject 
of much interest, and there is much to be done in this direction. 
Few Batrachian Ranunculi appear to have been recorded from 
between the Clyde and the vice-counties 103 and 110. Also with 
some species of Potamogeton and with Characee, the same blank 
occurs, yet some of these plants most probably occur in inter- 
mediate localities. Dragging apparatus does not take up much 
room, and it is much to be wished that our lochs were explored as 
occasion offers. As far as I have seen, small, easily-worked lochs 
are as productive as large ones, and in the latter, one of the best 
places is also the part most easily worked—that is, near the exit of 
the loch and a short distance down the outgoing stream. 

