FIRST LECTURE. 79 



(60) See Heyde, Experimeyita circa sanguinis 

 missionem ; Jlmstelodami, I6b6, 8°. p. 4*7; Tyson 

 in Philos. Trans. I66S, tab. 1 ; Vallisneri, the 

 work cited, tab. 18, 19 ; LeclerCf the work cited, 

 tab. 1, a, tab, S, b ,• Linnaeus, Amoenitates aca- 

 dem. tome 11, fa&. 1,/^. i. ; dndry, the work cited ; 

 Limbiirg, in Philos. Transactions, I766, jp. 128, 

 ifa6. 6 ; Marx, the work cited, fig. A. 



(6i) ^ee ^ VI!, p. 9. 



(65i) Linnaeus, Amoen. Academ., etc. ; and 

 Dr. TJnzer ; see Tentamen herpetologie^ auctore, 

 J. T. Klein, accessit J. A. Unzeri Observatio de 

 Taeniis ; Leidae et Gottinguae, 1755, 4°., p. 67, 

 declare that they have found this same species out 

 of the human body. These observations excited 

 animated debates among the naturalists, to decide 

 whether human worms were innate in man, or 

 whether their eggs were introduced into the human 

 system with our food. See the second Lecture. 

 The taeniae which are nourished in the human 

 body acquire so great a size, that they are never 

 seen of like magnitude in other animals ; it is for 

 this reason that the human taeniae are peculiar to 

 our race. 



(HS) The articulations or internodes of the neck 

 of this taenia have great resemblance to very small 

 folds., See PI. I, fig. i. 



(04) Plate 1, fig. ii, xvi. 



(65) Plate I, fig. iii. The largest articulations 

 have this peculiarity, that their figure no longer 

 presents a paralcllo£;ran}. but rather a trapezium 



