362 



PEOF. T. S. COBBOLD 02^ THE 



in respect of my little baematuric patient from Natal that be was 

 fully satisfied as to the genuineness of his ' find ' and as to the 

 identity of the parasitic forms in question. 



In the year 1875 Dr. O'Neill found similar or, to use Dr. 

 Silva Lima's words, " the same microscopic FilaricB proceeding 

 from the skin aflTected with a disease peculiar to negroes, and 

 which they called ' craw-craw.' " About the same time Dr. 

 Araujo also encountered this Filaria in a negro at Bahia suffer- 

 ing from the same disease. Dr. Araujo named the worm Filariose 

 dermatJiemica (Eef. No. 11). It is worthy of remark, in passing, 

 that in the * craw-craw ' cases the persons aflTected were not 

 chyluric. Purther in this connexion, and in support of the 

 parasitic theory of hsematochyluria, Dr. Silva Lima refers to 

 the writings of Dr. Almeida Couto (E-ef. No. 12), and also, 

 especially, to an inaugural thesis by Dr. Yictorino Pereira. This 

 distinguished young physician divided the baematuric discoveries 

 into four epochs, which be severally termed (1) the unknown, 

 (2) the Egyptian, (8) the Brazilian, and (4) the Indian period. To 

 these, however, as Dr. Silva Lima and myself have pointed out, 

 must now be added (5) the Australian, and (6) the Chinese 

 epochs of discovery (Eef. No. 13). 



The part which I took in connexion with the Australian ' finds ' 

 requires explanation. In 1876 Dr. Bancroft announced bis dis- 

 covery of microscopic Hsematozoa. He sent some of the human 

 blood in capillary tubes to Dr. Eoberts, of Manchester, who for- 

 warded part of them to myself, and we verified the facts. In the 

 contents of one of the tubes I happened to notice a single, empty, 

 and uninjured egg-covering ; and as this corresponded in sij^e 

 and shape with some of those I had obtained from my Naital 

 patient (1870), I drew Dr. Bancroft's attention to the circiim- 

 stance (Eef. No. 14). This induced Bancroft to search for fthe 

 parent entozoon in the human body. His search proved Efuc- 

 cessful, as he obtained the adult Filaria from a lymphatic abscess 

 of the arm on the 21st of December, 1876. On the 20th of th'^ 

 following April, 1877, he communicated to me the particulars of 

 his investigation, and I announced his discovery in the following 

 July (Eef. No. 15). This announcement appears to have stimu- 

 lated Lewis to still further eflforts, who, it appears, for " the last 

 five years had availed himself of every opportunity that presented 

 itself" for a search after the parent worm. At length Lewis 

 was rewarded, and on the 7th of August, 1877, he found two 



