EMKRYO BUTTRRFLIES. 



135 



Kmbryo butterflies QPontice Brassiccb), 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 Reaumur made a similar disco- 

 very in the caterpillar of the gypsey-moth {Hyjjo- 

 ^yimia dispar) f. 



Female of the perfect cabbage-butterfly {Pontia brassicce'). 



In order to harden the parts of the incipient butterfly 

 that are soft, Svvammerdam 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 Bomhyce, 29. f Reaumur, Mem. i. 359. 



