[ 238 3 



and their ufe, even in their deftrudllon, to the 

 general economy of nature : all thefe pofitions he 

 has illuftrated and confirmed by apt examples, 

 and finally draws this conclufion — that all nature 

 is moft harmonioufly arranged, and adapted to 

 produce, upon the whole, reciprocal good. This 

 paper is among thofe tranflated by Mr. StilUngfleet. 



20. De T^NiA, G. Dubois, 1748. 



At the time this treatife was written, the fub- 

 je6t had more than ufually engaged the attention 

 of the SwediJlD naturalifts and phyficians, and par- 

 ticularly of LiNNi5:us, and his colleague Dr. 

 Rofen^ the family of the latter having fufFered 

 much from this dangerous animal, as appears by 

 his treatife on the Difeafes of Children^ lately ren- 

 dered into Englijh by Dr. Sparmann. 



The author has here defcribed and figured four 

 fpecies, all of which are found in the inteftines of 

 animals, chiefly in thofe of carnivorous quadru- 

 peds ; and unhappily two of thefe kinds, but 

 more particularly the jT. Solium^ too frequently 

 infeft the human body. The fpecific difi^erences 

 of the ^aniee arife from the number and Jituation of 

 the mouths or fuckers in each link of this com- 

 pound animal, the hiftory of which has employed 

 the pens of many ingenious men, and is notwith- 

 ftanding yet involved in confiderable obfcurity. 



The Tape-worms moft commonly infelling the 

 human body, are thofe defcribed by Linn^us 

 under the names of 'T cenia Solium^ and ^enia Vul- 

 garis^ Syfl. Nat. p. 1323, both of which are not 



unfrequently 



