( 37 > 
for to adopt either of thefe methods, or 
any other he pleafes. When dead, 
their wings, &c. are to be expanded, 
and kept in as natural a pofition as 
pcffible. 
§• V. 
Infedts with two wings only, form 
the next clafs, Diptera : it contains 
various kinds of flies and gnats . There 
is fcarce any place in which fome of the 
former are not to be met with ; but they 
are found more particularly on all kinds 
of plants and flowers, efpecially on the 
umbelliferous ones. Some of them fly 
about cattle of various kind, in the {kins 
of which they depofit their eggs, as 
the Oeflrus Bovis, &c. The latter 
moftly 
them through with a needle dipt in aqua-fortis. 
The Sphinges, and other large Moths, are like- 
wife killed in this manner with the leaft injury. 
