PASC? 1 YF, 
SYSTEMATIC ZOOLOGY. 
The student is supposed to take two insects of the 
same kind. One he has to examine and try to refer to its 
family by means of the following tables. The other he is to 
pin—if a beetle, through the right elytron; if any other 
kind, through the thorax—label with the order and family 
to which it belongs and keep on a sheet of cork When a 
sufficient number have been named, they should be grouped 
on the cork according to their orders and families. 
A magnifying glass will be sufficient for most of this 
work, but small insects, and the mouths, antenne, and tarsi, 
of the larger ones, should be examined with the inch ob- 
jective. 
The parts of the mouth of beetles should be dissected 
out and arranged in their proper order on a glass slide .The 
animal may be placed on its back for this operation, and 
pinned down with a short pin through the thorax. 
Insects may be collected in quantity during the sum- 
mer, and killed in a killing bottle, or by placing the bottle 
containing them in hot water. They may then be preserved 
either in spirit, or may be dried and kept in pill boxes, pro- 
vided that care is taken not to shake them much, for fear 
of breaking the antennz and legs. Dried insects are ren- 
dered available for examination by relaxing them, either by 
placing them for twenty-four hours on. wet sand covered 
with one thickness of blotting-paper, or by putting them 
