FI LARI A IN THE EYE. 
659 
worm, which looked like a fine piece of catgut. I prescribed 
low diet, with aperient medicine, and kept the eye covered, so 
as to exclude light. In fifteen days the eye recovered entirely.” 
In searching the literature of this subject, the accompany¬ 
ing cuts, taken from Muller’s ‘Zoologica Danica/ vol. iii, p. 49, 
t. 109, f. 12, were chosen as best exhibiting the characteristics 
of the parasite under consideration.* 
Fig 1. 
Fig. 1 represents the Filaria papillosa Rudolphi, natural size. 
Head (a) and tail ( b ) of the so-called Filaria oculi (F. papillosa, Rud.). 
Highly magnified. After Dr. Anton Schneider. 
This variety of threadworm is known as the Filaria 
papillosa , Rudolphi, and is described by Diesing, in 
his f Systema Helminthum/ vol. ii, Vienna, 1851. 
“ Mouth round and provided with four small spines 
above and eight below, arranged crucially. Body long 
and tapering. Caudal extremity of male a loosely 
turned spiral, on either side of the margin of which 
are two papilla; female sub-spiral. It is viviparous. 
Male two or three inches, and female five to seven 
inches in length ; thickness one thirty sixth to one 
twenty-fourth of an inch.” 
The earliest account of this worm Diesing gives 
in his extensive bibliography, which goes back to the 
year 1645, when Spigelius, of Amsterdam, recorded 
a case of filaria in the vitreous humour of the eye of a horse. 
Numerous interesting cases are referred to as having oc¬ 
curred in Great Britain, with a few in Europe, while the 
majority are sent by English veterinary surgeons in India to 
the Veterinarian , a standard English journal. 
The haunts of this animal may be said to be throughout the 
entire body of the horse* and Diesing enumerates them as 
* The illustrations which accompany this paper have been supplied by Dr. 
Cobbold as being superior to those selected by the author. 
