Mr. Neill, in his tour, has noticed the black-
moss trout of Loch Knitching, and Loch Kat-
rine is said to abound also with small black
trout; an effect considered to be produced in
some waters by receiving the drainings of bog-
gy moors. In streams that flow rapidly over
gravelly or rocky bottoms, the trout are gene-
rally remarkable for the brilliancy and beauty of
their spots and colours. Trout are finest in ap-
pearance and flavour, from the end of May till
towards the end of September;* an effect pro-
duced by the greater quantity and variety of
nutritious food obtained during that period.
