Fourth Meeting: 7th August, 1890.
J. T. Meeson, B.A., President, in the chair.
Paper.—Notes on the Earthquake of 7th March, 1890, felt at Napier, Gisborne, and other Places,” by G. Hogben, M.A. (Transactions, p. 473.)
Professor Hutton said that the paper was an extremely valuable one, as it followed the best methods of determination for the centrum and epicentrum. The direction of shock, as determined by seismograph, was now found to be extremely unreliable; and consequently the most important observations were those of time and amplitude. It was extremely important that seismographs should be employed for the determination of these. People outside of New Zealand spoke of it as a country of severe earthquakes; and it required definite evidence to remove the bad impression that was abroad. He agreed with Mr. Hogben that the method of co-ordinates was of little use for ascertaining the depth.