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caufed a drawing to be made of their figure, as near as the Engraver 

 was able to imitate it ; this is {hewn at fig. lo, F G, which repre- 

 sents fuch an unformed JMufcIe, inclol'ed in its membrane, or cover- 

 ing, in which the flreaks before-mentioned, did not appear, until the 

 greateft part of the moiRure thereof, was evaporated. Fig. ir, 

 HI K, fliews another of them, tiie ftreaks, or veflels in which, be- 

 tween I and K, ap])eared feparated, or fundered from each other ; 

 and this was done in the taking it out of tlie ^gg, being in that ope- 

 ration deprived of the furrounding membrane, or fkin. 



At the latter end of April, when I had iiniflied the preceding 

 obfervations, I received a large jar full of Mufcles out of Zealand; 

 upon examination of which, I was much furpriled to fee that moll 

 of the Ihells were quite fmooth and poliflied, being not only deftitute 

 of eggs, but for the molt part, bare of the membrane, w hich gives 

 them a blackifli colour, ib that they now appeared of a lively blue ; 

 however, I found four or five with perfc61: eggs on them, and in them 

 were young Mufcles ; fome of thefe ! took out of the eggs, and now 

 plainly faw, that what I had at firft taken for the unformed Mufclc, 

 was, in fadl, only the ligament, or flriiig, whreby the young Mufcle 

 was nourllied. A drawing of the real Ihape, as it now appeared to 

 me, is given at y^^. I 2, where GH I repreients the ligaments of the 

 unformed young Mufcle, and I K the Mufcle itfelf ; another of them 

 is reprefented at Jig. 13, where LM ihews the firings or ligaments, 

 and MN the Muicle ; and this lafl figure, I think, exhibits the true 

 form of the young Mufcle, as it lies in the egg ; and from thefe lafl 

 obfervations it appears, that the parts reprefented in Jig. 10, at G, 

 and in^^. 11, at H, were only the fubflance, or matter, from whence 

 the Muicle would be formed, and which, at the time when that draw- 

 ing was made, had not come to fufficient perfeftion to render the 

 parts dillinguifliable. 



Now, fmce we fee, that the eggs of Mufcles adhere fo long to tiie 



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