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mals appearing quite healthy. Dr. Paquin has noted that the 
parasites of Texas fever are found in the normal liquids and 
tissues of infectious cattle that always appear healthy, and 
even in the young before birth. He says,—“ The germ of 
Texas fever requires a resting period, during which it regains 
its vigor, and until such time as vigor is regained it lies dor¬ 
mant.” ( Journ . Comp. Med. and Vet. Archives , July, 1890.) 
What the peculiar change in locality or action on the part of 
the monads may be that determines the diseased condition, is 
one of the points which needs elucidation. We naturally ask 
if there be any analogy in the behavior of other parasites in 
this respect? Dracunculus may cause little or no trouble in 
the earlier stages, but developing, changing place, and dis¬ 
charging its embryoes, the gravest results follow; trichina 
in its earlier stages is comparatively unfelt, but may become 
the cause of fatal disease. We may therefore conclude from 
these facts that, in order to produce surra in animals, various 
conditions, such as affect the patient’s system as well as influ¬ 
ence the parasite in question, are essential ; and that in the 
absence of these conditions, the same parasites may frequently 
be present in the blood without causing any disease. Simi¬ 
larly, in regard to the relation of anchylostoma to the ansemia 
of man, it has been noticed that this parasite was so frequent 
in the post-mortem examination of cases that did not die of 
anaemia, that it is doubtful as to whether its presence invari- 
ably gives rise to anaemia with all its train of symptoms.— 
{Brit. Med. Journ., June 30th, 1888.) 
Dr. Vandyke Carter,* of Bombay, has demonstrated that 
malarial fever in man is of the nature of haematozoic affec¬ 
tions. He has ascertained that in remittent fever of man the 
blood contains parasites which, in their morphology and 
general features, are identical with parasites of surra in lower 
animals. Prof. Klebs, of Zurich, who has made a thorough ex¬ 
amination of the blood of many patients suffering from influ¬ 
enza, has found in it enormous masses of flagellate monads. 
* On the lately demonstrated Blood Contamination and Infective Disease of 
the Rat and Equines in India, 1888. 
Note on some Aspects and Relations of the Blood Organisms in Ague, 1888. 
