206 PARASITES OF MAN 



Loa by the natives, who state that after a period of several 

 years the worm voluntarily quits the organ. The disease is 

 thus naturally cured. This parasite enjoys a tolerably wide 

 geographical distribution, as it has been observed by Clot Bey 

 in a negress who had come from the town of Monpox, situated 

 on the banks of the Eiver Magdalena ; by Sigaud, who saw one in 

 the eye of a negress in Brazil; by Blot, at Martinique, who 

 saw two in a negress originally from Guinea ; by Bajon, who 

 met with one in a little negro girl who had come from Guade- 

 loupe ; by Mongin, wh.o found one in a negress who had been 

 living in the Island of San Domingo ; and by Lestrille, who 

 removed one from beneath the conjunctiva of a negro who 

 came from Gaboon. 



BIBLIOGRAPHY (No. 24). Davaine, 1. c., p. 839. Guy on, 

 ' Gaz. Med. de Paris/ p. 106, 1841, and in ' Micr. Journ. and 

 Struct. Record/ p. 40, 1842, and in ' Dublin Journ./ vol. xxv, 

 p. 455, 1839.Idem, ' Compt. Rendus/ torn, lix, p. 743, 1865. 

 Guyotj in 'Mem. par Arrachait/ p. 228, 1805. Kuchenmeister, 

 1. c., s. 322. Lestrille, in Gervais and Van Beneden's ' Zool. 

 Med./ 1859, also quoted by Davaine, 1. c., 2nd edit., p. 840. 

 Leuckart, 1. c., s. 619. Moquin-Tandon, J../Zool. Med./ Hulme's 

 edit., p. 363, 1861. 



Filaria lentis, Diesing. This is a doubtful species. The 

 worm was first discovered by Nordmann, in a case of lenticular 

 cataract under the care of Von Grafe, and it was afterwards 

 found by Jungken in a similar case, as recorded by Sichel. 

 There is also the instance described by Gescheidt, in which Von 

 Atnmon operated, and from which brief descriptions of the 

 worm have generally been taken. In this case there were three 

 worms, two measuring about 5" and the third ^' in length. In 

 Jiingken's case (exhibited by Quadri, of Naples, at Brussels) the 

 worm was more than f" long. In another case, reported by M. 

 Fano, the worm was somewhat less than " long. There is no 

 certain evidence that any of these various worms had developed 

 sexual organs in their interior. It is true that the reproductive 

 organs were described in two of the worms observed by 

 Gescheidt; but after a due consideration of all the facts I 

 fear we must conclude that all the worms in question were 

 sexually-immature and wandering nematodes, possibly referable 

 to Gurlt's Filaria lacrymalis, as Kiichenmeister long ago 

 suggested. 



BIBLIOGRAPHY (No. 25).Cobbohl, ' Eutozoa/ p. 332. Da- 



