APRIL — jUNEj 1857.] Memoir on the Aden Reservoirs. 37 
A reference to Table A will show that tanks of the aggregate ca- 
pacity of 3,538,715 imperial gallons have been completed at an ex- 
penditure of 1 1,543 Rupees, in other words, that a permanent and 
tolerably reliable water supply has been hecured to Aden, at the rate 
of five annas and three pies of original outlay, for a constant supply 
of one hundred imperial gallons jtj?/' annum. The best comment I can 
offer on this is the fact, that at present, Government is paying to the 
Haswah water contractor, one Rupee and twelve annas for every 
hundred gallons of water supplied by him^ the vessels of war in 
the harbour a^d the various public departments located outside the 
Main Pass, and the merchant vessels are paying nearly double that 
price for worse water. 
It is much to be regretted that no regular register of the Pluvio- 
meter has ever been kept in Aden ; but an imperfect series of me- 
moranda exists in the records of the Jail, from which Table D has 
been framed. 
The falls numbered 5 and 8 and the two unrecorded, in Septem- 
ber 1853 and March 1854, would have sufficed to fill all the reser- 
voirs in the Peninsula, and those numbered 1,12 and 18 would pro- 
bably have given not less than 6,000,000 gallons each. Thus in 
the course of five years the reservoirs would have been entirely fill- 
ed four times, and about twenty million gallons of water would 
have been collected in addition at intermediate periods, or calcu- 
lating the entire contents of the reservoirs, when all shall have 
been cleaned out and repaired, at twenty million gallons, we may 
expect to have an annual supply of twenty million gallons, in ad- 
dition to that afforded by the wells. 
This of course may be multiplied indefinitely by constructing 
new reservoirs at Steamer Point and other localities where they do 
not at present exist. 
The above is of course merely conjectural, the tanks have never 
been filled, and it is impossible to frame any calcula^ons regarding 
them, with even approximate accuracy, but I trust that sufHcient 
has been shown, to remove any doubts as to the advisability of car- 
rying on the work, and restoring all that have been discovered, the 
more so as the expense cannot be very considerable. 
