128 TREATISE ON THE 
explain. That a more abundant supply of 
food, and of a more stimulant quality, admin- 
istered in a cell of larger dimensions, should 
give full development to organs which, by 
the ordinary treatment, would have remained 
but partially expanded, I can readily com- 
_prehend, but that such extra supplies of food 
and space should effect an absolute change 
in the anatomical structure and instinctive 
propensities, should produce a more slender 
proboscis, deprive the transformed insect of 
the downy brushes at the joints of her limbs, 
and of the basket-shaped cavities in the pos- 
terior pair, for retaining the pellets of farina; 
and, above all, should effect so great an al- 
teration in her instincts, rendering them in 
numerous particulars entirely different from 
those of the worker class, for which she was 
originally destined—these are circumstances 
which, notwithstanding ail my researches, 
are still involved in mysterious obscurity, 
and furnishes ample scope for future inves- 
tigation. 
