BLOWING EGGS OF LEPIDOPTERA.

Extract

The preservation of the eggs of buttetflies and moths as objects for study, has always been found a very difficult matter. The structures of their shells are so delicate and porous that if the eggs are allowed to dry either naturally or otherwise, they shrink quite out of shape due to the evaporation of the fluid part of their contents and to prevent this shrinkage by immersing the eggs in various liquids has not been fonnd convenient for their later examination.