SENSES OF INSECYS. 2SG 
In fact, the chief evidence we have with regard to the of- 
fice of the organs of sense in the animals immediately be- 
low ourselves, is that of analogy ;—because we see with 
our eyes, hear with our ears, &c., we conclude, with rea- 
son, that they do the same. 
In inquiring therefore into what may be the most ge- 
neral use of the antennze of insects, I shall endeavour to 
discover whether there is any part in the higher animals 
to which they may be deemed to exhibit any analogy. 
And here I must refer you to what I have said on a for- 
mer occasion upon the present subject ; where I made it 
evident, I hope, that the great bulk of the parts and or- 
gans of insects, in this particular differing from the ma- 
jority of Invertebrates, are, some in one respect, some in 
another, and some in many, really analogous to those of 
the higher animals? ; and that a great many of them, 
though varying in their structure, have the same func- 
tions. ‘Thus the analogues of the eyes of Vertebrates 
are for seeing; of the jaws for masticating ; of the lips 
for closing the mouth; of the legs for walking, &c. We 
have seen also very recently, that a similar analogy, more 
or less strongly marked, holds also in their internal or- 
gans®; so that it may be safely affirmed, that if all the 
invertebrate insects, though gifted with numerous pe- 
culiarities, present the most striking picture of those ani- 
mals that have an internal skeleton, and more particular- 
ly of the Mammalia,—we may assume it as a probability, 
the above circumstances being allowed their due weight, 
that where facts do not prove the contrary, the function 
of analogous organs is more or less synonymous, though 
* Vor. ID. p. 43—. » See above, p. 1—. 
