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Depôt Pond.
A large variety of hæmatozoon was present in the blood of
six specimens of this species of fish examined.
Old Jumna River.
The large variety of hæmatozoon was found in the blood of
three fish examined.
Singhi or Tinghi.—This fish belongs to the order Physostonii ; family Siluridæ;
genus Macrones ; species M. Seenghala and M. Tengara.
These fish were caught only in the Old Jumna River, but were not seen in the West
Jumna Canal or in the neighbouring ponds. The small variety of the hæmatozoon were found
in the blood of all the specimens examined; they never exceeded five in a field of the micro-
scope, Zeiss D, ocular No. 4.
Blood from numerous other species of fish obtained from a similar source to the above
mentioned, was submitted to microscopical examination, but no hæmatozoa were found in any of
the specimens. The names of the fish were as follows :—
Pattia (Hindu.), Barbus stigma.
Mobaylee (Hindu.), Labeo diplostomus.
Purri (Punjab), Notopterus kapirat.
Kugga (Punjab), Clarias magur.
Rewah or Rohwa (Hindu.), Cirrhnia reba.
Kathgodam.
Water.—Samples for microscopical examination were obtained from the river and from
stagnant pools in the neighbourhood.
Flies, Mosquitoes and Ticks.—Were collected from the bodies of the Tonga, Ekka ponies,
and from dogs. Different species of diptera were also caught in the vicinity of stagnant
water.
In no instance, however, was the Trypanosoma found.
Filariasis.
N.-W. P.
Two horses employed in the Dâk Gharies at Mohand were found to have filaria in every Mohand,
specimen of their blood examined.
I was shown in the Government Depôt one horse, the subject of slight paraplegia, Karnal.
and at a later date a second animal was observed to be suffering from similar symptoms.
An acute case of the same disease occurred on the 11th June, death taking place on the
17th instant. The chief points of interest in the last case being—
(i) The suddenness with which the symptoms supervened.
(ii) The presence of the Embryo filaria papillosa in the circulation.
(iii) The administration of Arsenic in increasing doses (5) ; disappearance of the
filaria from the blood after 18 grains had been given.
(iv) High temperature, 108°F., at death, which rose to 111.2°F. seventeen minutes
later.
(v) The venous engorgement of the vessels on the superior surface of the spinal
cord, below the 16th Dorsal vertebra, and the presence of a clot due to extravasation
of blood on a level with the 17th Dorsal vertebra. These changes were most
probably due to the impaction of a mature filaria in one of the vessels of the cord,
and by its prolonged efforts to become free, caused rupture of the walls of the
blood vessel and consequent hæmorrhage. The presence of the clot together with
the inflammation set up would fully account for the marked paralysis from which
the
animal
suffered.
Two bullocks out of thirty examined were found on microscopical examination of their
blood to have numerous Embryo-filaria present in every specimen examined :—
(i) Bullock K 211 -89-C.H. was isolated in paddock No. I on account of mange, but
has now recovered. This animal was in poor condition :—
June 13th 1896. Several specimens of blood examined; mean number of filariæ
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15th
16th
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31
17
15
15
(ii) Bullock 20.93, was an inmate of the Bovine Hospital suffering from Eczema.
June 13th 1896, mean of three blood specimens examined gave 20 Embryo filariæ.
The bullock, the subject of Surra and Filariasis in December 1895, is now convalescent and
in good condition. The blood examined microscopically on several occasions (June 1896)
always presented a normal appearance.
Surra Trypau-
osoma.
Summary of Results of investigations made during the Hot season.
1. Of the number of animals, horses, mules, bovines, whose blood was submitted to
microscopical examination (many of them on several occasions) during my visits to various
known centres of Surra, not one animal was found to be suffering from that disease.
2. Negative results with regard to the Trypanosoma followed the large number of
observations of blood and body fluids derived from different species of Flies and Ticks.
3. Negative results followed the microscopical examination of the various samples of
running and stagnant water, derived from every available source at the localities visited.
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