25
Date.
1882.
8th Feb. ..
Do.
14th do.
Do.
Do.
9th do.
Do.
Do.
Do.
10th do.
Do.
11th do.
Do.
Do.
12th do. ...
Station.
Karáchi ...
Do.
Do.
Do.
Do.
...
Do.
Do.
Do.
Do.
Do.
Do.
Do.
Do.
Do.
Do.
Source.
Well, Filter tub (No. 1 block,
Royal Artillery.)
Do., Macnamara filter (No. 1
block, Royal Artillery).
River Indus water at Kotri (sup-
plying the 98th Regi-
ment at Karráchi).
Do. stored in well
Do. from distributing pipe at
Kotri.
Do. from Commissariat carts
supplying the barracks
of the 98th E. I.
Do. from filter tub (No. 4
block, 98th Regiment).
Do. Bhisti's musuck
Do, Macnamara filter (No.
4 block, 98th E. I.)
Reservoir at Mullir, No. 1
Do.
do., No. 2
Water from prostitute's house,
No. 12, Police lines).
Do.
do.,
No. 18...
Sodawater from Mr. Byramji
Edalji's shop in Frere Street,
Sadar Bázár.
Do. from Mr. Gulam Hu-
sain's shop.
GRAINS PER GALLON.
Total
Solids.
114.4
112.
16.1
14.
14.
13.6
13.3
13.2
11.9
28.7
34.3
233.8
330.
Chlorine.
48 65
48.6
1.6
1.54
1.54
1.33
1.4
1.4
1.33
6.86
8.26
79.
108.9
...
...
PARTS PER MILLION.
Free
Ammonia.
026
Nil.
026
005
008
026
026
026
Nil,
Nil.
Nil.
026
0132
005
0132
Albu.
minoid
Ammonia.
15
06
08
06
06
909
14
14
06
06
06
2
15
09
11
Sediment, &c.
The same as above
Very scanty, vegetable debris ...
Copious, vegetable debris, fine
sand.
Scanty, vegetable debris, fine
sand.
Do.
do.
do.
Do.
do.
do.
Copious, vegetable debris, mo-
nads, paramecia, rotifera, fine
sand.
The same as above.
Very scanty, vegetable debris ...
Scanty, vegetable debris, mo
nads.
Do.
do.
do.
Copious, vegetable debris, para-
mecia, rotifera.
Do.
do.
do.
do. ..
Quality.
Bad.
Do.
Good.
Do.
Do.
Do.
Bad.
Do.
Good.
Do.
Do.
Bad.
Do.
Good.
Fair.
The wells are for the most part sunk in the tertiary sandstone forming the
old bed of the River Layári, and the water contains salts varying in quantity from
75 to 300 grains of solid matters, which consist for the most of the chlorides and
carbonates of calcium, magnesium, and sodium. For example, the water from
the well which supplied the Royal Artillery contained as much as 112 grains of
total solids and 48 65 grains of chlorine per gallon, whilst that from the well
supplying the Napier or Infantry barracks contained 79 1 grains of total solids
and 29 4 grains of chlorine per gallon. It is necessary to mention that when the
North Staffordshire Regiment became so sickly water from the River Indus was
brought down from Kotri to Karáchi for their use. This state of things is now
happily at an end, as the Municipality have lately completed a scheme by which
water is brought in from wells sunk on the banks of the River Mullir, at a distance
of 10 miles from Karáchi, from which the water is brought in through a closed
conduit to a reservoir, from whence it is distributed to Camp and the Native
Town. It is satisfactory to notice that this water is of good quality, as the sample
from one of the wells yielded only 28 7 grains of total solids and 6 86 grains of
chlorine per gallon. This amount of chlorine is high, but as it is derived solely
from the saliferous nature of the rock in which the wells are sunk, it may be safely
disregarded; and I have no doubt that the health of the troops will be greatly
improved by the good water now supplied to them, although I regret to learn
that it is not laid on to the barracks but only to stand pipes in the lines
from which it is still distributed by the filthy musuck. I desire to call particular
attention to the very large increase of albuminoid ammonia found in water from
the Bhistis' musucks and in the filter tubs in the barracks. For example, whilst in
the sample from the well supplying the Artillery it only amounted to 0 06 parts per
million, that from the musuck and filter tub contained the very high amount of 0 15
parts per million. When, however, the water had passed through the Macnamara
filter it was found that it had retained 2 4 grains of the total solids per gallon and
had reduced the albuminoid ammonia from 15 parts per million to its original
quantity, 06.
The deteriorating effect of the musuck on water is also seen in the sample
of Indus river water supplied to the Napier Barracks. Luckily the Macnamara
filter efficiently removed these impurities.
357—7