'Transactions of the Bombay Geographical Society, from January 1847 to May 1849. Edited by the Secretary. Volume VIII.' [‎334] (443/496)

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during which time the chronometer had been exposed to various alter
nating temperatures, and to the perturbations incident to mountain tra
velling ; yet it is satisfactory to add, that the position of Khanakin, on
connecting the series of measurements, differs but three miles of longi
tude from that assigned to it on the journey outwards, and this differ
ence, in the construction of the map, has been distributed over the whole,
to prevent its attachment at one spot. The Geographical determina
tions, as noted in the journal, may, therefore, I think, be relied on as a
very near approximation to the true positions. The bearings through
out are magnetic, carefully taken with an excellent prismatic compass by
Troughton and Sims, cut from 0 to 360°,—East being 90° ; South, 180°;
and west 270°, and the variation of the Needle for obtaining the true
Azimuth will be found among the other Astronomical data. The lon
gitudes throughout the journal are reckoned from the meridian of Bagh
dad, which we now consider as definitely settled at 44° 25 / East of
Greenwich, though in the construction of the map that accompanies the
journal it is placed in 44° 2CK east. This however, is of little moment,
and can easily be altered by placing the meridians five miles farther to
the west.
A delay, consequent on other public duties, and a recall to India,
where I had my time fully occupied in the compilation of a General
Map embodying the work of the Euphrates expedition in these countries,
has prevented the completion of the journal until the present time; but
from the kindness of Major Eawlinson, I am now able to append the
elevations of some of the principal places included in it. These were
observed by him on his recent visit to Persia, and are a valuable addi
tion to the other Geographical data. Tide following table :—
By Colonel Sykes’ Boiling Water Apparatus.
Locality.
Centigrade
Thermometer.
Fahrenheit’s
Thermometer.
Boiling Point.
Approximate
Elevation.
Multiplier.
True Eleva
tion IN FEET.
•
H
H
P
Sarpuli Zohab
Surkhi-dezr
Kirrind
Harunabad
Kirmanshah
Hamadan
Summit of Elwend
40°
31°
31°
36^°
30i°
27°
IH °
122°
101J°
10lf°
114°
1001°
93°
67°
209° 25
205° 611
202° 90
203° 50
202° 50
200° 75
188° 00
1405
3295
4710
4392
4922
5849
12843
1*187
1*146
l*14 f
1171
1*142
1*127
1*073
1667*
3776
5397
5143
5621
6592
13780
5th July
6th July
7th July
9th July
14th July
13th Aug
15th Amr
Baghdad, \ (Signed) E. Jones.
31st Dec., 1847. Nitocris. / (True copies) A. Malet,
Chief Secretary.
* Above the level of the sea, deduced by formula of Major Jackson.