Second Meeting: 4th June, 1913.

Present: Dr. Charles Chilton, President, in the chair, and sixty members and friends.

New Members.—Misses F. Berkeley, C. B. Mills, Messrs. G. E. Archey, A. C. Purchas, W. George Howes, W. H. Clark, and Dr. T. A. MacGibbon.

Papers.—1. “Some Photometric Measurements of the Dispersing-power of certain Commercial Glasses,” by Mr. D. B. McLeod.

2 “On certain Tripolar Relations,” by Mr. E. G. Hogg.

Address.— “The Origin of Taranaki Petroleum,” by Mr. R. Speight.

Exhibits.—A number of exhibits were shown by Messrs.-R. Nairn, C. Dash, E. Herring, and C. E. Foweraker.