APPENDIX 
OBSERVATIONS ON THE PORTS AND HARBOURS FROxM TRIPOLY 
TO DERNA, IN THEIR ACTUAL CONDITION. 
In addition to what we have already observed with respect to the 
shores of the Syrtis and Cyrenaica, we have thought it necessary 
to subjoin the following short description of them, and of the sup- 
plies that ships may expect to meet with at the different places 
situated along the coast from Tripoli to Derna. The several places 
therein alluded to, will be found in the accompanying chart, which 
has been constructed from a succession of angles, carried on along 
the coast, assisted by astronomical observations, and chronometrical 
measurements, between three distant points, whose positions were 
well determined by Captain W. H. Smyth, R.N. 
The instruments with which we were furnished, in consequence 
of the difficulty of carriage, were small, and their number limited ; 
they consisted of a five-inch theodolite, one four-inch and two eight- 
inch sextants, a telescope for observing the eclipses of the satellites 
of Jupiter, a Rater’s azimuth compass, two pocket chronometers. 
Nos. 2164 and 2184 of Mr. Arnold’s make*, and a measuring chain 
and tapes, &c. 
Before entering into any particular description, we shall premise 
by stating that, between Tripoli and Bomba, there is not a harbour 
* In justice to Mr. Arnold, we must say that these two watches gave results 
beyond our mostsaiiguine expectations. 
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