BLOODWORMS. 145 



this parasite produces, I must refer you to my 

 larger Treatise, and also, more particularly, to the 

 standard works of Leuckart and Kuchenmeister. 

 You will also gain some interesting information 

 from Dr. Harley's contributions to the Medico- 

 Chirurgical Society. The complete developmental 

 history of this entozoon remains to be cleared up ; 

 but I take this opportunity of mentioning that I 

 have already observed the development of the 

 larvae of Bilharzia up to the stage at which they 

 display a remarkable subcutaneous water-vascular 

 system. The results of my investigations I hope 

 shortly to publish at greater length ; but I may add 

 that a brief notice of the principal points observed 

 has already been recorded in the Report of the Pro- 

 ceedings of the Meeting of the British Association 

 held at Liverpool in 1870. As it is not improbable 

 that many more cases are likely to come to the 

 notice of the profession in this country, I am glad 

 to be able to bring before you the facts of one very 

 interesting, and in some respects unique, case, which 

 has occurred in my own practice. This example 

 will serve to illustrate certain points in the early 

 history of the disease, and it will also, I hope, be 

 instructive in reference to the questions of diagnosis, 

 prognosis, and the most correct methods of treat- 

 ment. 



CASE LXXXL G. I. G., a little girl, seven years 

 of age, came to England from Natal, with her parents. 



