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A sextant of the same materials and size. A quadrant of one and a half cubits radius, and an azimuth circle of three cubits. Ptolemy's parallactic rules, covered with brass, four cubits in the side. The sextant already described in page 134. Another quadrant, like No. 3. Zodiacal armillaries of melted brass, and turned out of the solid, of three cubits in diameter.
The variation this day was, by azimuth and amplitude, 15° 4' 1/2 E., and by observation made of the sun and moon, the longitude of the ship appeared to be 180° 55' W., and by the medium of this, and subsequent observations, there appeared to be an error in the ship's account of her longitude during her run from Otaheite of 3° 16', she being so much to the westward of the longitude resulting from the log.
Two degrees correction azimuth 350!" and the great rocket would steady on course again. There was a circuit to carry the heartbeats of the monkey caged in the nose cone, and another to carry his skin temperature, and dozens more. Rick didn't even notice when it grew dark.
Variation per Azimuth 13 degrees 48 minutes East. At 4 A.M. made sail, and Stood in for the land. At daylight saw the appearance of an inlet into the land; but upon a nearer approach found that it was only a deep Valley, bounded on each side by high lands, upon which we bore away North-East 1/4 East along shore, keeping about 4 or 5 miles off.
I therefore issued directions to deposit at this encampment the dipping needle, azimuth compass, magnet, a large thermometer, and a few books we had carried, having torn out of these such parts as we should require to work the observations for latitude and longitude. I also promised, as an excitement to the efforts in hunting, my gun to St.
He was particularly anxious to obtain the exact range of certain of the Russian positions without being obliged to fire any trial shots, and he asked me if I could do this for him, seeing that I had already done similar work quite recently; and I told him that I could, and would, with pleasure, if such a thing as a box sextant or an azimuth compass was to be found in camp.
If, therefore, observing and calculating were considered as necessary qualifications for every sea officer, the labours of the speculative theorist to solve this problem might be remitted, without much injury to mankind: Neither will it be so difficult to acquire this qualification, or put it in practice, as may at first appear; for, with the assistance of the nautical almanack, and astronomical ephemeris, the calculations for finding the longitude will take up little more time than the calculation of an azimuth for finding the variation of the compass.
I had lost my rifle in the high grass, as I had been forced to make a short run from the spot before I knew that the elephant had followed the horse; thus I was nearly an hour before I found it, and also my azimuth compass that had fallen from my belt pouch. After much shouting and whistling, my mounted man arrived, and making him dismount, I rode my little horse Mouse, and returned to the path.
Wind South-East to North-East; course South 35 West; distance 97 miles; latitude 33 degrees 18 minutes South, longitude 162 degrees 51 minutes West. Monday, 25th. Ditto weather. At 1 p.m. passed by a Piece of Wood, about 3 feet long and 7 or 8 Inches thick. Variation at 6 p.m. per Azimuth, 10 degrees 48 minutes East. A.M., got up all the Boatswain's Stores, to take an account of them.
Fresh breezes and Cloudy weather. At 2 p.m. saw a piece of rock Weed. Variation, per Azimuth 7 degrees 0 minutes East. Wind West to North-West; course North 32 West; distance 44 miles; latitude 37 degrees 52 minutes South, longitude 146 degrees 2 minutes West. Wednesday, 6th. Fresh Gales and Squally, with rain.
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