THE FUNCTIONS OF A LOCAL NATURAL HISTORY SOCIETY. 29 
when possible. So little is really known of these insects that no 
one should be discouraged if this cannot be done at once ; the 
preservation of the gall and the insect, and the accurate descrip- 
tion of its appearance when fresh, being the chief part of the 
work, and the one which will materially help future workers on the 
various species of gall-producing insects. - 
