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Filaria loa 
to justify him in making such a statement. This was Brumpt who had 
observed in the blood of a patient a microfilaria which he had described 
as a new species, Filaria hourgii. Upon the death of this patient he 
found in the heart a portion of a female worm without head or tail, but 
presenting cuticular bosses like those of Filaria loa. After returning to 
Paris he compared his specimens of microfilariae with those described 
by Manson as Filaria diurna and he decided that they were identical, 
and the mere association of these microfilariae with an adult Filaria loa 
in the same host led him to make the above statement. 
In 1906 Livon and Penaud observed some embryos of Filaria loa 
which had been artificially removed from an adult female, but their 
description is quite brief and unaccompanied by any figures. 
Recently Burrows has published an article on the relation of F. 
diurna to F. loa, but both of the adult F. loa removed from his patient 
were mutilated and therefore the opportunity of obtaining embryos from 
the female was lost. 
I have been more fortunate than my predecessors in being able to 
observe and study a live female F. loa, fully matured, wdth uteri filled 
with ripe embryos. These embryos have the same dimensions as those 
recorded for F. diurna and are identical with them in other respects. 
Since Huffman and Wherry have already described the anatomy of 
the adult F. loa (see this Journal 7), I take this opportunity of 
adding a few notes in regard to the living adult from which the embryos 
were obtained. 
Dr Emil Blunden brought to the laboratory a live female Filaria loa 
62'5 mm. in length which he had just removed from the eye of Mrs B. 
This is the eighth specimen removed from Mrs B. The worm had been 
placed in warm tap water, and there was no doubt about its being alive 
because it continually performed all manner of movements. The -worm 
Avas very white, the cephalic extremity and the tail, into which the 
genital organs did not enter, were translucent. The intestine, being 
black, was quite visible throughout its course. 
The worm was placed on a large glass slide so as to be observed 
under the microscope. The cephalic papillae were easily discerned but 
did not project from the cuticle as much as their granular contents 
projected from the musculature. The oesophagus was long and narrow 
and not bordered by such big cylindrical cells as in preserved specimens ; 
moreover it was clear and appeared to have narrow culs-de-sac opening 
into it from either side. The viscera occupied less than two-thirds of the 
diameter of the body and the musculature was clear and translucent. 
