68. Surveys of Sananwan and Kot Adu were taken up early in the
year, and one of Karor late in the year at the suggestion of the Local Govern
ment as made in the review of the last year's annual report.
The country round Sananwan is usually found to be submerged during
the rains on account of soma and though a drain has been cut from Sananwan
to Gurzrani, through which the water was rapidly flowing at the time of
inspection, no impression appeared to be made on the flooded area.
A large number of larvae was breeding in the flood waters, especially
in the rice fields.
The survey of the town of Kot Adu was taken up for the sake of
point of view of malaria, and as on this ground the tahsil headquarters were
to be transferred to it. Observations have shown that Kot Adu does not seem
to fulfil anticipations but rather that it is more malarious than Sananwan.
Karor was suggested for survey by the Local Government as the fever
death-rate there has been constantly high.
59. The characteristics of the anopheline fauna were observed in a
great many towns and villages, and mosquitoes collected from different parts
of the Province. They were examined, classified and a few specimens preserv-
ed for identification.
60. Thousands of anopheles were dissected to determine the local
carrier species in the various places, and again efforts were made to discover
if the A. RoFsi acts as a carrier of malaria in the Punjab, but these-have
hitherto ended in failure.
61. The towns of Amritsar, Mianwali, Montgomery an d Sialkot were
visited, and observations made during the last fever season.
62. Some villages in the Ambala District at the foot of the sub-
Himalayan range were visited in an attempt to gauge the amount of malaria
at the foot of the hills as compared with that in the hills and in the plains.
It was found that there was a definite decrease in spleen rate as one proceeded
from the foot of hills to the open plains.
63. The usual periodic spleen census of the province was carried out.
Various statistics having a direct bearing of malaria have been collected from
a large number of towns.
64. The spleen-rate, as taken by medical men in charge of Civil Hospi-
tals last year, was checked at Dinga, Sargodha, Bhera and Sambrial and the
result showed that much more trouble might be taken by them in carrying out
this duty.
65. At Lahore anopheles larvae were found to abound in the new storm
water channel, which has been dug from the Ohangar Mohalla behind the
Landa Bazar to the Budha Baver, and in the shallow water on the small lawns
between the Hazuri Bagh gate and the Badshahi mosque ; unfortunately when
the Budha River is full the new channel, instead of emptying into it, receive s
water from it in which as it stagnates anopheles larvas develope in large
numbers. These breeding places in the close vicinity of the fort area are a
source of danger to the Port and the northern part of the town.
66. The towns of Sialkot, Bahawalnagar, Samasata, Khanpur and
Bahawalpur were visited with a view to gauging the extent of the outbreak of
malaria reported. The hospital returns at the railway dispensaries at Samasata,
Khanpur and Bahawalnagar showed a very large out-door attendance for fever
pointing to a very marked increased incidence of malaria.
67. Correspondence has been kept up in connection with the work of
reducing the number of breeding places in Lahore, Mianwali and certain other
places.
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