?• NOTES TO THE 



fitecl with the excrements. This is the real cause 

 of t!ie expulsiou of certain pieces of the taenia, 

 without the use of any remedy. 



(12) Dissert, de vennibus intesiinalibiis liomin- 

 um ; etc. 



(13) Arzneyen, ii. JB., Langensalza, i^&T- 

 (.l-i) See pi. I, fig. 1, V. vi. 



A (15) See pi. I. fig. 1, a c c d. fig. v, AB, fig. vi. 

 a h. 



(16) See pi. L fig. viii. 



(17) Traite de la generation des vers des in-' 

 testin8,etc. p. 15. 



J 8) See pi. I. fig. i. ab, 



(ly) See pi. I. fig. vii, f e. 



(r20) See pi. 1. fig. vii. ix. 



(ti) See pi. I. fig. i, a c c d. fig, iv. a b. fig. v. 

 AB. 



(S3) Let us consider for example the taenia 

 which Baldinger says he saw, seven hundred feet 

 in length(§. V). Admitting the neck to be fifty feet 

 long, its head beiog cut off, and the rest of the bo- 

 dy observed apart, it would have been taken for 

 the entire body of a taenia by every observer. 

 The same uncertainty would ai*ise from the other 

 part of the body separated from the neck. The 

 length might lead one into a mistake ; and the same 

 worm examined superficially, would be described 

 as two different species. We find this conjecture 

 realized in a number of naturalists who have divid* 

 ed the same species into several. 



