216 
AN ACCOUNT OF VARIOUS FILAltliE. 
which it is recommended to apply sutures after it is returned. 
This is unnecessarily barbarous, and what I think no veterinary 
surgeon of the present day ought to have recourse to, especially 
when more efficient and simple means can be adopted. 
AN ACCOUNT OF VARIOUS FILARIiE. 
In the Compte Rendu of the scholastic year 1842-43, Messrs. 
Gruby and Delafond announced the discovery of a worm of the 
Jilaria genus, living in the blood of the dog. They have continued 
their observations on this worm, and the following are the results 
of their new researches. The blood of two hundred and fifty dogs, 
of different breeds, ages, and sexes, has been examined, and this 
worm only met with five times, or once in fifty cases. Dogs hav- 
ing this venous worm are in all other respects in perfect health, 
and have all their instinctive faculties. The blood of these ani- 
mals is redder and more serous than in the ordinary state. 
The feeding these dogs for fifteen days on fat, meat, broth, 
bread, or potatoes, exclusively, total rest, violent exercise, or ex- 
hausting bleedings — none of these things have the slightest effect 
on the number, form, or motions of these filarise. 
Two decilitres of verminous blood, deprived of its fibrine, was 
transfused into the vessels of three dogs which had not worms in 
their blood. At the expiration of eight days no traces of the filarim 
were to be discovered. 
Five decilitres of verminous blood, deprived of its fibrine and 
maintained in its natural heat, were then injected into the vessels 
of five dogs that had previously had no worms in their blood, and 
it produced these filarise without affecting their health. Their blood 
is verminous to this day. 
Blood containing these worms and deprived of its fibrine was 
injected into the veins of frogs, with and without filarise in their 
blood, and gave them these worms for eight days ; but the hema- 
tozoaires disappeared as soon as the globules of the dogs’ blood 
had become altered and decomposed in the vessels of the frogs. 
The filaria, if deposited alive in the serous cavities and the 
cellular tissue, soon ceased to live under these new conditions. It 
is not met with in the excrementitial matters and humours, as the 
urine, the saliva, the bile, the aqueous humour, the hyalo'ide body, 
the cephalo-rachidian fluid, and the pus secreted by wounds. 
Chyle taken from the chyliferous vessels of the mesentery and 
the thoracic canal, and lymph collected from the principal lymphatic 
trunks of the body, offered no traces of these animals. 
The filaria of the dog is born and developed in the blood of this 
