CHAPTER XIII. 
THE SENSES AND SENSORY ORGANS. 
1. SENSATION IN INSECTS. 
TuaT insects possess the senses of sight, hearing, smell, taste, 
and touch is indubitable, and one or more of these senses are 
usually highly developed in each species, whilst the others 
play a subordinate part. 
There is an argument which is frequently advanced against 
this assertion. It is said that as insects appear to be indifferent 
to pain, they can hardly possess acute sensibility of any kind. 
That a wasp will frequently continue to feed on its favourite 
sweets after the abdomen has been cut away, or that a moth 
pinned to a cork appears to suffer little inconvenience, and a 
hundred other facts indicating the absence of pain, may be 
adduced; and I think there is sufficient evidence that the 
Arthropoda do not suffer pain, which is quite as conclusive as 
Bibliography : 
192. MéLLER, JOHANNES, ‘The Physiology of the Senses, Voice, and 
Muscular Motion, with the Mental Faculties.’ Translated from the 
German by W. Baly. Lond., 8vo., 1848. 
193. Paascu, A., ‘Von den Sinnesorganen der Insecten im Allgemeinen, 
von Gehér und Geruchsorganen im Besondern.’ Archiv. f. Naturge- 
schichte, Jahrgang xxxix., 1873. 
(This paper was originally written in 1846, but remained in the 
author’s desk until 1873.) 
194, ForeL, A., ‘Beitrag zur Kenntniss der Sinnesempfindungen der 
Insecten’ Mitt. d. Miinchener Entom. Vereins, Bd. ii., 1878. 
195. LUBBOCK, Sir J., ‘Ants, Bees, and Wasps: a Record of Observations 
on the Habits of Social Hymenoptera.’ The Internat. Science 
Series, 8vo., Lond., Paris, and Berlin, 1882. 
