"_27th._--I have little to say of Boele Comba. It is situated in the bight of the bay, eastward of Bonthian. There appears to be much, confusion an Horsburgh's Directory about the latitude and longitude, and the hill called after the place. This hill is the last of the mountain-range, somewhat detached, covered with wood, of moderate elevation, and peaked. From our anchorage, two miles from the fort, it bore N.N.W. The fort is similar to the one at Bonthian, the country pretty, and nearly level. The Bonthian mountains (_i. e._ Lumpu Balong and the range) show steep and well in the background. Game abounds, by report. Europeans are subject to complaints of the eyes, and occasionally to fever. Any vessel running in should be very careful, for the charts are defective, and Boele Comba reef is said to project farther to the westward of the fort than laid down. "I here subjoin a list of our barometric observations, the upper barometer reduced to the rate of the lower and standard one:-- _Senua, 20th December, 1839._ Bar. A. D. 1. 30.054 86 87 3h 15m P.M. 2. 28.385 79 80 _Lengan Lengang, 21st December._ Bar. A. D. 1. 30.119 79 78.5 6h 30m A.M. 2. 27.988 70 69.5 6h 0m " _Lokar Peak, 21st December, 100 feet below summit._ Bar. A. D. 1. 30.095 90 90 10h 30m A.M. 2. 25.975 79 79 _Hill on the way to Lumpu Balong, 22d December._ Bar. A. D. 1. 30.144 90 90 Mean between 8h and noon. 2. 23.612 ... 66 65.5 10h 40m A.M. _Lumpu Balong Peak, 22d December._ Bar. A. D. 1. 30.146 89.5 90.5 2h 0m P.M. 2. 23.718 64 63.5 2h 30m " _28th._--Leaving Boele Comba after breakfast, we shaped our course for Point Berak.