ON THE DEVELOPMENT OF BILHARZIA HA5MATOBIA. 753 
in great numbers. Frequently from ten to fifteen ova were 
found in a single drop of urine.” 
Now it is important to remark that it does not appear that 
there was any haematuria in the last-named case, which Dr. 
Salisbury describes as one of cystinic rheumatism,” or 
“ severe cystinaemia associated with rheumatism and paraly¬ 
sis.” The patient has been insane for several years. Her 
urine was passed milky, with granular cystine, and was dense 
and scanty.” It is likewise added, " No examination was 
made of the muscles after death to determine whether this 
species burrowed in the tissue, like the [Trichina] spiralis” 
So much for the principal facts recorded by Dr. Salisbury. 
His paper is accompanied by two woodcut figures of the ova 
( x 300 diam.), and one representation of the embryo (x 1000 
diam.) If these figures give the size correctly, the ova measures 
only about 8 -~in length by , - 5 T 0 6 in breadth ; whilst the em¬ 
bryo would be about from head to tail. However, not¬ 
withstanding these discrepancies as to size—and it is evident 
that Dr. Salisbury’s figures do not make pretension to absolute 
accuracy in this respect—I am inclined to think that Dr. 
Salisbury and myself have been made acquainted with nema¬ 
tode eggs and embryos referable to one and the same species 
of parasite. At present, I do not care to speculate very 
freely as to the origin of these ova; but I may remark that, 
although I long ago gave in my adhesion to the determina¬ 
tions of Dr. Schneider in respect of the pseudhelminthic 
character of the so-called Spiroptera liominis, I am by no 
means certain that his position in this question may not be 
disturbed by fresh discoveries. It is not a little remarkable 
that the parents of my patient should have averred that she 
passed three small vermiform entozoa by the urethra; cor¬ 
responding, to judge from their verbal statements, very 
closely with the ordinary appearances of Filaria piscium. It 
is likewise worthy of note, that this patient had also played 
the part of “ host ” to about a dozen large lumbrici, for the 
expulsion of which she had been successfully treated by Dr. 
Lyle, at Durban, Port Natal. Into the clinical bearings of 
the case, however, I have no need to enter, since I have 
already fully discussed this part of the subject in my newly 
issued work on f Practical Helminthology/ — The British 
Medical Journal. 
