198 Remarks in an Excursion into 
hedge it can meet with, and immediately 
creeps under the leaves. Here it remains 
without food for two or three days, when 
another very wonderful change takes place. 
The whole of its outer green coloured skin 
is then stripped off, and the fly emerges in a 
much more active and delicate form. If the 
day be fine, it immediately sallies forth in 
search of its mate, and they are seen dancing 
together in the air, and mostly over the rivers 
or lakes, in immense quantities. The ova of 
the female being protruded, are jerked from 
them, in their up and down flights, and 
their specific gravity being much greater than 
water, they sink quickly to the bottom, where 
they are hatched by the warmth of the suc- 
ceeding months, and the larve seek their win- 
ter quarters in the sand beds, and stiller parts 
of rivers. The parent fly not appearing to 
have taken any food, becomes perfectly trans- 
parent and dies. This I apprehend is also 
the history of the lesser ephemerz, known to 
anglers by the name of duns. 
Most of the valleys im Cumberland afford 
excellent pasturage for sheep, and are chiefly 
appropriated to such as are immediately in- 
tended formarket. In thesenatural meadows, 
many of the best esteemed grasses are to be 
