C.—U

20

1 have to express my indebtedness to niv assistant. Mr, Thomas Maben. for his valuable services during the year. Very many valuable reports and publications on magnetic science have been received from various British and foreign institutions and scientists, and thanks are gratefully tendered for them. Henry F. Bkey, B.Sc, Officer in Charge.

Earthquake Records by Milne Seismograph No. 16, at Christchurch. On the 11th May, 1911, the new type of recording-apparatus was installed on the Milne Seismograph No. 16. This recorder has a time-scale of 241mm. to the hour; the former recorder had a timescale of 59mm. to the hour.

ComniHncement. Max. Max. Amplitude. Duration. Remarks. Date. 1011. April 0 . . ,, 7 . . 8 . . .. II .. .. 13.. .. 15 .. .. 21 .. .. 23 .. .. 26 .. .. 27.. Mav 1 ..' 20 .. .. 2.'! .. .inno .'! .. 6 .. ,, 7 .. .. 10 .. „ 12 .. „ 15.. „ 28 . . • Inly 12 .. „ 10 .. August 6 10 16 l» 21 .September 6 15 15 < lotober 5 November 2 16 30 December 3 13 2:i .. i II. H. II. M. II 55-1 10 oi-:i 7 33-2 - ■J* i i 11-6 2 16-2 2 18-4 L3 lo-o 13 Hi' 10 14-7 IO IS-:! 1 50-0 5 05-0 5 i :(-4 2 15-5 2 201 2 33-0 12 1.-KS 12 50-6 ] 18-3 I 27-5 :! 03-3 :i 04-8 12 27-1 12 :I2-Ii 16 19-6 16 20 1 I 33-1 4 37-s 4 40-3 20 39-1 20 41-6 20 45-6 20 17-.. 13 05-1 i:i 06-6 1.-! 12-6 7 44-2 7 49-5 0 53-2 11 17-5 11 31-5 12 00-5 12 09-6 12 14-5 17 00-8 17 07-6 7 12-6 7 17-6 14 36-4 14 46-0 14 48-7 14 .-)2-4 15 04-5 li» 57-3 111 40-4 4 191 I .18-0 4 45-0 4 49-3 !l 02-2 !) 05-8 9 07-3 1 26-0 I 28-6 0 33-4 0 45-9 22 51-2 23 18-3 23 21-7 23 2:5-7 23 27-4 2 21-8 2 24-8 16 38-0 16 41-0 1 17-9 1 20-7 II 07-7 12 25-2 12 251 13 44-8 13 48-8 7 :!8-l( 7 41-3 7 41-5 O 56-2 I 01-1 11 15-9 II 47-9 I I 49-6 io 29-2 io :s:s-2 I I 50-:! I I 520 12 01-8 12 03-2 21 52-1 22 09-0 MM. o-:i 0-2 0-2 0-5 1-5 I-l 2-5 1-6 1-5 1-0 21 o-l 0-2 0-3 0-2 0-1 0-1 1-5 2-0 1-7 1-5 II-,", 0-5 0-5 0-7 1-0 0-8 0-8 1-1 01 5-5 IO 3-0 :t-8 1-5 2-1 1-5 90 1-2 l-o 0-4 0-4 90 6-0 11-0 6-2 0-3 4-0 0-6 1-5 0-6 2-0 1-0 0-5 21 1-7 1-8 I I -5 1-5 0-9 I-l II. NI. o ll-."> Duration uncertain owing to tremors. o 50-7 o 24-0 In middle of tremor. o 19-6 L.W. commence 5li. 02-5m. 1 17-5 o 2:>-8 Duration uncertain owing t" tremor. I) 59-5 I o 06-9 o 10-3 o 06-3 o 19-2 Oommencemenl obscured by tremors. Duration unoertain owing to tremors. ii 1*8-0 0 28-3 2 52-0 1 14-0 0 14-0 :i 08-0 0 28-5 . .. L.W. begin Hi. 28-2m. L.W. begin Hi. 28-2ni. :i 360 End obscured by tremors. End obscured by tremors. 0 17-5 o 310 L.W. commence 22h. 59-5m. L.W. commence 22h. 59-5m. I IO-5 0 1:5-0 Duration approximate. Duration approximate. Duration obscured by tremors. Duration obscured l>v tremors. I 12-0 > . . Beginning and end obscured by tremor End obsoured l»v following quake. o 11-0 Beginning and end obscured by tremors. End obsoured by following quake. irs o 55-0 Shook :ii Hastings, X™ Zealand. o 33-0 End uncertain. Shock al Hastings, X™ Zealand. End uncertain. 0 11-3 o 27-0 Duration uncertain owing t" tremor. O 11-7 o ol -ii Small local shock. Duration uncertain owing to tremor. End indefinite owing to tremor. Small local shock. End indefinite owing to tremor. 1912. January 6 February 25 March 13 „ 25 18 01-4 18 07-3 5 43-0 5 50-0 5 52-0 19 :S9-0 19 45-5 5 07-0 5 11-5 5 14-5 0-7 2-5 20 0-8 0-6 1-0 1-0 0 58-1 I 30-6 Beginning anil e-inl obscured by tremors. Beginning and end obscured by tremor rs. 1 07-4