SEISMOLOGICAL PHENOMENA. 35° 
REPORT OF THE SEISMOLOGICAL COMMITTEE 
OF THE AUSTRALASIAN ASSOCIATION FOR 
THE ADVANCEMENT OF SCIENCE. 
Tue Seismological Committee was re-elected at the meet- 
ing of the Association held in Melbourne, January, 1900, as 
previously constituted, with the addition of Mr. E. G. Hogg, 
M.A., for Tasmania; Mr. Davidson, for Queensland (in 
place of Dr. R. L. Jack) ; and Mr. P. ‘Baracchi. as Secretary. 
it was subsequently arranged that Mr. G. Hogben would 
continue to fill the position of Secretary conjointly with Mr. 
P. Baracchi, the former acting in respect of New Zealand, 
and the latter in respect of the Australian States. 
The Committee regrets to report the death of one of its 
members—Mr. A. B. Biggs, of Launceston, Tasmania—which 
occurred in September, 1901. 
The organisation of Seismological work in the Australian 
States on a uniform and efficient. system has proceeded 
slowly, owing to the difficulty of securing a sufficient number 
of willing and reliable observers at suitable places scattered 
over an area covering some millions of square miles; but 
considerable progress has been made during the last two 
years in some of the States, and it is expected that, with 
the assistance of the Postal and Telegraph Departments now 
- under the Federal Government, the completion of the re 
quired net of stations recording seismic phenomena in accord- 
ance with prescribed scientific methods will, by degrees, be 
extended over the whole continent of Australia and Tas- 
mania. 
Seismographs of the form recommended by the Seismologi- 
cal Committee of the British Association (Milne Horizontal 
Pendulum) have been installed at the Sydney Observatory, 
Perth Observatory, and Melbourne Observatory. The one 
at Perth has been in use and registering regularly since 
October, 1901. The one at Melbourne, after long delays 
and difficulties in obtaining a suitable place for efficient in- 
stallation, is now ready to commence its routine work; and 
the same may be said in regard to the Sydney instrument, 
In future the records obtained by these instruments will 
be supplied regularly to the Secretaries of the Seismological 
Committee of the British Association, in accordance with the 
general scheme laid out by that Committee. 
It is very desirable that the other Federal States, more 
especially South Australia and Tasmania, be provided with 
