( 2(Sl ) 



parts, and thefe parts, again united with other flefliy particles. 

 But how often this feparation and reunion of parts take place, and 

 what courfe the particles themfelves take, 1 have not yet been able 

 to difcover. 



Each of thefe feveral flefliy parts, of which only two are exhi- 

 bited in^^. 4, at BCD, and HN I, were covered with broken and 

 torn fragments of other parts, but thefe I direiled the Lim!ier not 

 to delineate, that the concatenation, or the manner in which the par- 

 ticles are linked together, might be better diftinguifhed. 



After I had cauled the before mentioned drawing, fig. 14, to be 

 made, I again examined various flelhy particles in the heart of a duck, 

 and, while I was thus eni])loyed, I met with one fmall piece, in 

 \vhich I was convinced, that the concatenation or linking together of 

 the parts, would be flill more difl:in(5tly feen. This, being placed 

 before a microfcope of fomewhat lefs magnifying power, I delivered 

 to the Limner to make a drawing of. 



Fig. 15, ABCDEFGH, is this piece of a duck's heart, in which, 

 more plainly than before, can be feen the nature of its formation, 

 which will appear iViU inore wonderful, if we confider, as the truth 

 is, that the conne6lion or linking together of the parts, in the particle 

 which this^^. 15, rcprefents, was, in the fubjeft iti'elf, thrice as much 

 as here expreffed ; for, I could not feparate a piece of this fize from 

 the heart, without tearing afunder twice as many parts or points of 

 union as are here exhibited. This particle was taken from almofl: the 

 outfide of the heart, and, that part which in the figure is marked 

 ABCD, was fituated pointing towards the fmall end or tip of it. 



In order to Ihew the true dimenfions of the particle reprefented, 

 in this lall figure, I meafured it, and found, that the whole length ihewn 

 in the figure, between the letters EFG H, was, in its natural fize, not 

 more than two third parts of the breadth or thicknefs of that part 



