EMBRYO BUTTERFLIES. 



135 



Embryo butterflies (Pontia Brasaicat), as they appear in the 

 bodies of caterpillars. The wings, antennae, and trunks in the 

 figures are spread out to show them. 



By similar dissections, Malpighi both actually dis- 

 covered the moth in the body of a silk worm, and also 

 the eggs of it;* and R'aumur made a similar disco- 

 very in the caterpillar of the gypsey moth (Uypogymna 

 dispar).-\ 



Female of the perlect cabbage butterfly (Pontia brassiccc.) 



In order to harden the parts of the incipient butterfly 

 that are soft, Swammerdam immersed the caterpillar 

 in a phial filled with equal parts of vinegar and spirit 

 of wine for sixteen hours, when he found it would 



* Malpighi de Bombyce, 29. t Reaumur, Mem. i, 359. 



