524 PHILOSOPHICAL TRANSACTIONS. [aNNO I67O. 



aurelia the change of that caterpillar, which shows no parts at all of the animal 

 to come ; having, I say, noted this, he desires the reader to observe, that whereas 

 he is able to discern and to show all the parts or members of the future animal- 

 cule, as well in the chrysalis as the nympha; he makes no other difference 

 among them but this, that since the parts in a chrysalis are not so plainly dis- 

 cernible to our view as those in a nympha, and because a chrysalis does some- 

 times appear of a gilt-colour, which he has not hitherto observed in a nympha, 

 he calls the nympha barely by the name of puppet, and the chrysalis by that of 

 gilt- puppet ; the distinction of which is made very clear by the neat and accurate 

 cuts annexed, and their explication. In this first part is set forth the manner 

 how the worms and caterpillars turn into puppets, and shown that some insects 

 come perfect out of the egg, and never out of a puppet ; that the principal dif- 

 ference of the worm-animalcula that turn into puppets consists in this, that 

 some have feet, some have none ; that the breast of the feetless worms is never 

 changed; that the six fore feet of the worms with many or few feet are never 

 changed or transposed; that the wings, horns, feet, &c. grow up under the 

 skin by degrees; that in all worms he can easily show the said parts under the 

 skin, affirming to have done it actually in the presence of Signer Magalotti, and 

 Monsieur Thevenot, two very intelligent and cautious persons, and that even a 

 frog comes forth into a puppet. 



Secondly, this book undertakes to make it out, how the true ground of the 

 natural changes, or the knowledge of the nympha and aurelia, has been obscured 

 and marred: showing how it is to be cleared and restored again. Where he 

 affirms, that Moufet and others do err about the aurelia, making it neither an 

 egg nor an animal; and that Harvey mistakes, calling the aurelia (which indeed 

 is the animal itself) an egg, and affirming, that bloodless animalcula are pro- 

 duced out of aurelias by transformation, whereas the change happening in the 

 puppets is nothing else but an evaporation of the, superfluous moisture. Fur- 

 ther, that Goedart errs, holding that a caterpillar may change before her time; 

 and that, if she so changes, she then produces another animal ; contrary where- 

 unto our author affirms, that these animalcula, which the said Goedart men- 

 tions as changing against the order of nature, do always come forth in that 

 manner, viz. the male with wings, and the female without them; observing 

 further, that caterpillars early forbearing to eat, come only to turn into smaller 

 bodied animals ; and adding that they may change when they will, and that the 

 animals when once changed do never grow larger. And from the knowledge of 

 the propagation of these animalcula he is of opinion, that we may arrive to that 

 of the propagation of the rest of animals ; where he declares his sentiment, that 

 there is no generation in nature, but only a production by the growing of parts. 



