4 THE ROYAL SOCIETY OF CANADA 



feet, a depth of hold of 16 feet, and a displacement of 1,450 tons. 

 She is rigged as a barkentine and is provided with auxiliary steam 

 power in the form of a vertical triple expansion engine of 275 indi- 

 cated horse power, which is capable of driving her at a speed of 7 

 knots an hour in smooth water. In 1904 she was purchased by the 

 Canadian Government and has made several voyages to the northern 

 part of Canada. 



There were provided for ocean Magnetic observations a Kelvin 

 Admiralty standard compass and a Ritchie U.S. standard compass, 

 with their usual fittings; and for the determining of position, sextants 

 graduated to 10 seconds, and five chronometers, whose rates were 

 determined at Quebec before leaving, and again on returning. 



Ocean Magnetic Observations. 



Station: — At Sea. 



Date:— Saturday, Aug. 3, 1912. 



Compass : — Ritchie 



Lat.:— 60 55-5N 

 Vessel : — Arctic. 

 Obs'r:— W.E.W.J. 



Weather : — Fair. 



Sea: — Smooth Wind: — Moderate. 



Declination. 



o / 



Long.:— 92 37-7 W 



Rec'd'r:— W.B.W. 

 Roll or heel :—0. 



h m s 



Watch time 19 55 6 



Watch error -1 3 10 



L.A.T 18 51 56 



Hour angle 6 51 56 



Sun's dec'n: 17° 24' 25" 

 Sun's true Az.:N 70° -3 W 

 Remarks: Compass fairly steady. 



Compass bearing of sun : N 72-3 W 



Deviation: 2-4 W'y 



Sun's Magnetic Az.: N 74-7 W 



Declination : +4-4 



For land observations the instruments provided included an 

 Elliott horizontal force Magnetometer, and a Carnegie Institution 

 Magnetometer, which were used for the determination of horizontal 

 force and declination, and two Dover Dip circles of the Lloyd Creek 



