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Updated: May 17, 2025
"To carry the survey from the island across to Chilkoot Inlet I had to get up on the mountains north of Haines mission, and from there could see both inlets. Owing to the bad weather I could get no observation for azimuth, and had to produce the survey from Pyramid Island to Taiya Inlet by reading the angles of deflection between the courses.
He realised the superiority of a circle with graduations over a much larger quadrant. The collimation error was found by reversing the instrument and using a terrestrial mark, the azimuth error by star observations. The time was expressed in fractions of a second. He also constructed a telescope with equatoreal mounting, to follow a star by one axial motion.
Employ'd Surveying the Carpenter's Stores and repairing Sails. Wind Ditto; course South 72 degrees 30 minutes West; distance 87 miles; latitude 21 degrees 51 minutes South; longitude 286 degrees 15 minutes West. Thursday, 14th. Moderate breezes and Cloudy, with some Showers of Rain. Variation per Azimuth 4 degrees 10 minutes West.
For science may press her devotees into as many different pursuits as there are starting-points to an azimuth circle, and command them to search and find out the ultimate causes of things in the universe, but the forever narrowing circle in one direction, and the forever widening one in the other, would utterly baffle all their attempted research.
On arrival in camp every day came the ascertaining, by boiling a thermometer, of the altitude of the station above the sea-level; of the latitude of the station by the meridian altitude of the star taken with a sextant; and of the compass variation by azimuth.
Mr Wales determined the longitude of that part of New Caledonia we explored, by ninety-six sets of observations, which were reduced to one another by our trusty guide the watch. I found the variation of the compass to be 10° 24' E. This is the mean variation given by the three azimuth compasses we had on board, which would differ from each other a degree and a half, and sometimes more.
In the morning, we found the variation to be 1° 10' W. by the amplitude, and by the azimuth 1° 27'. At noon, our latitude was, by observation, 9° 45' S., our longitude 234° 12' W.; we were then about seven leagues distant from the land, which extended from N. 31 E. to W.S.W. 1/2 W.
It contains dials, azimuth masonry, altitude pillars, astrolabe, and a double mural quadrant of enormous size and height, on which the gradations have been marked. In a way this exhibit of obsolete paraphernalia refutes the idea that Jeypore's maharajahs have lived solely for the gratification of the senses by amusements.
Wind North and North-West; course North 56 degrees East; distance 54 miles; latitude 45 degrees 24 minutes North, longitude 11 degrees 59 minutes West per Log, 10 degrees 45 minutes per Observation. Thursday, 4th. Gentle breezes and Cloudy weather. Variation per Azimuth and Amplitude in the Evening 21 degrees 25 1/2 West, and in the Morning 20 degrees 10 minutes West.
It passes the width of a weatherboard, 0.37 foot, in four minutes and thirty- seven seconds." Kennedy was talking rapidly of data which he had derived from the study of the photograph as from plumb line, level, compass, and tape, astronomical triangle, vertices, zenith, pole, and sun, declination, azimuth, solar time, parallactic angles, refraction, and a dozen other bewildering terms.
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