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animal's head, but alfo a great number of fniall vefiels in it wliich 

 branched out into others extending all over the body, particularly to 

 thofe parts where I could perceive the claws begin to appear, and 

 which, therefore, I concluded, were nourilhed by thofe veflbls. In 

 fliort, I faw fuch multitudes of veffels, with their branches, all of a 

 blackifli colour, as is not to be conceived, for when thefe branches 

 became beyond meafure flender, they loft tlieir dark tinge, and at 

 length became invifible. And I can fafely fay, that I do not think I 

 have feen fo many arteries pi6tured in the drawing of an human 

 body, as appeared in thefe obje6ts, which I fliould have given a 

 drawing of, but the moifture in thefe minute veffels dried fo quickly, 

 that they "loft their figure, and could no longer be diftinguiflied. 



On the 31 ft of May, I opened feveral more eggs, and faw that 

 many of the Silk-worms in the fpace of the laft twenty-four hours 

 were lb much grown, that they appeared compleatly formed, for I 

 could not only fee the head perfeftly formed with all its parts, but 

 alio all the claws and limbs, and the body every where covered with 

 hairs : upon opening thefe Silk-worms, I faw the inteftines, and now 

 the membrane, which hitherto had inclofed the animal, was difap- 

 peared, the fubftance thereof by this time having palled into its 

 body, which had aflumed a blackilli colour, but the head was parti- 

 cularly black, and I perceived fome motion in the animal when taken 

 out of the egg. 



The next morning, upon opening more eggs, each Silk- worm 

 which had lain in a round pofture within, immediately extejided 

 itfelf and crept about, ^ and I found that all the moifture which I had 

 hitherto obferved in the eggs was gone, it having palled into the bod}'' 

 of the worm, -which was perfe6tly dry. In tlie afternoon of the fame 

 da}^ I obferved that feveral worms had crept out of the eggs placed 

 in my clofet, whereupon I fat about examining the remainder of 

 thofe eggs, chufing fuch of them, wherein the formation of the ani- 



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