( 'O 



much paler coloured tlinn the back, the fkiii rough and covered 

 ^vith prickles or points, and fo traniparent, that the bowels and vei- 

 fels may plainly be feen on botli fides. The head wliich is fliewn 

 confiderably magnified, at letter G, is of a pointed form, plano- 

 convex, that is, rounding above and flat below, the mouth projeft- 

 ing, open, and of an oval Ihape, nearly in faihion like a carp. The 

 eyes, which are pit^hircd feparately at H and I, are very prominent, 

 and furrounded with a cartilaginous or griftly ring, which is Ihewn 

 at K, and they are placed, as we fee in many flat filhes, both of them 

 on one fide of the back, with a divifion between tliem. 



Tiie heart is fo near to the head, and the bowels fo clofely con- 

 joined to the heart, that I queftion whether there is any thing, pro- 

 perly to diRinguilh the head from the reft of the body, which yet in 

 moil animals are feparate and diftindl. From theheait, arifc twovef- 

 fels fpreading over the whole bod}-, with a wide fpace between them, 

 extending almoft the whole length of the back, as reprefented at 

 letter L, and between thele vellels are many Imailer ones, as fliewn at 

 M, which are fo minute that no moifture can be difcovered witiiin 

 them. I obferved in the larger vedels two forts of juices, namely, in 

 fome a yellowilh brown, and fometimes a kind of purple ; in others a 

 pale green, both of a glutinous or flimy nature, and yet flowing in 

 tlie vcfiels even after the death of the animal, towards the heart, if 

 lield up by the tail, and back again, upon the head being raifed. 



The excretory dufl, or pallage of the bowels, is in an unufual 

 place, being on the right fide of the body, clofe under the head, 

 for which reafon the inteftines are as it were, crowded together in 

 an heap. There is a fmall protuberance at the beginning of the 

 bowels, which I take to be the liver, and between this and the 

 bowels, I find in all of tliofe animalcules which I have ex- 

 amined, an innumerable quantity of oval particles, hundreds of 

 which, taken together, are not equal to the fize of a grain 

 of fand. They are of a pale red colour, and I take tliem to 



