C—lα.

Yearly Means from Absolute Observation. ■■■*■■ 1905. Alteration since 1903. Declination ... ... ... ... 16° 27-2' + 08-8' Horizontalforce ... ... ... -22622 c.g.s. - -00035 e.g.s. Inclination ... ... ... ... 67° 45-9' + 03-6' Vertical force ... ... ... -55336 c.g.s. + -00077 c.g.s.

Comparison of Observatory and Field Magnetometers and Dip Circles.

List of New Magnetic Stations, 1906. MethvMi. Duntroon. Roxburgh. Middlemarch. Mount Algidus. Kurow. Alexandra. Nightcaps. Hakateie. Hakataramea Downs. Cromwell. Winton. Fairlie. Bog Roy. Naseby. Heriot. Lake Tekapo. Longslip. Liniiburn. Waipahi. Lilybank. Lawrence. St. Bathan's. Mataura. Lake Pukaki. Waimahaka. Hjde. Riversdale.. ■ The Hermitage. Waikawa. Hindon. Warepa. Repeat Station : ' Clinton.

20

Station. Date. Magnetometer. Value of H. Difference in Value of H. NABC, No. 1. 1906. January 6 6 ... NABC ... No. 1 I 3.g.e. '•22642 1-22624 ( 000018 iast Pillar Station. Date. Dip Circle. Needle No. Inclination Mean. Difference Circle 147. Field Circle. West Pillar 1906. January 7 No. 147 1 2 3 1 2 O I If 67 46 51 ) 67 47 51 67 44 56 ] 67 46 5 I 67 46 45 I 0 I It 67 46 33 \ + 08" Field 67 46 25 1 7