GOEDiUS AQUATICUS. 413 



a case in the private practice of Mr. Grosse of Norwich, where a 

 young woman tried to deceive that distinguished surgeon by plac- 

 ing one or two Grordii in the chamber-pot ; and, only very recently, 

 another similar case has been brought under my notice by Dr. 

 Bree of Colchester. I have no. doubt many such cases have oc- 

 curred in the experience of those of our medical brethren who are 

 occupied with country practice. The worm has a deep chestnut- 

 brown or blackish colour, is usually about a foot in length, and 

 scarcely more than 4 ' in breadth. It has the peculiar habit of 

 coiling itself into knots, whence its generic name. The sexes are 

 distinct, the male being easily recognized by its bifid caudal ex- 

 tremity. The tail of the female is simple and rounded. 



Before concluding, it remains for me to notice categorically, and 

 with the brevity they deserve, the following so-called parasites : — 



1.- Gercosoma, Canali and Brera; Bremser ; Rudolphi ; Siebold; 

 Diesing. This is the larva of Eristalis tenax, or E. pendulum, 

 which had accidentally got into the urine. 



2. Ditrachyceras rudis, Sultzer ; Bremser; Bschricht; Diesing; 

 Lerreboullet ; = Diceras rude, Eudolphi ; Lamarck ; = Gysticer- 

 cus bicornis, Zeder. This turns out to be a carpel of the mulberry 

 {Morus nigra), which had been "macerated and deprived of its 

 colour by digestion !" 



3. Sagitiula hominis, Lamarck ; Chiaje ; Blainville ; Siebold ; 

 Diesing (gen. fict.) ; = Animal bipede, Bastiani, According to 

 Yon Siebold, this is a fragment of the hyoid bone of some bird which 

 was passed with the fceces. 



4. Diacanthus poly cephalus, Qtiehel; Bremser ; B^udol-phi; Die- 

 sing (gen. fict.). The illustrious Blumenbach determined this to 

 be a raisin-stalk which had been evacuated per anum. 



5. Acephalocystis racemosa, Cloquet. Under this heading we 

 may place all those grape and current-like hydatigenous formations 

 so frequently present in certain morbid affections of the chorion. 



6. Ascaris conosoma, Jordens and Lenz ; Brera ; Bremser ; 



