46 Address. [Feb. 



ferential Equation of all Parabolas. There are two other Entomological 

 papers, one by Mr. E. T. Atkinson on Indian Rhyncliota, and on the 

 Butterflies of the Nilgiri District, by Mr. Gr. F. Hampson. Mr. S. A. Hill 

 has a note on the Psychrometer and the condensing Hygrometer. Mr. 

 Anderson describes a new ciliate Infusorian. General Collett, C. B. 

 contributes a paper on the geological structure of the Myelat district in 

 Burma and Mr. Wood-Mason has a note on some objects found by Mr. 

 Driver in a neolithic settlement in Chutia Nagpur. 



The volume for 1889, of which four numbers and two supplements 

 have already been published, contains no less than 23 papers, illustrated by 

 23 plates. Our Vice-President, Mr. E. T. Atkinson, 0. 1. E., contributes 

 several valuable entomological papers which will be noticed hereafter, 

 and the Supplement No. 1, with 199 pages of letterpress, is devoted to 

 his two Catalogues of the order Coleoptera, family Cincindelidce, and of 

 the order Rliynchota, sub-order Hemiptera — Heteroptera, family Capsidce. 

 These Catalogues form part of a proposed complete " Catalogue of the 

 Insecta of the Oriental Region." The remaining papers deal with many 

 branches of science : Mr. Hill has given a very full account of the Tor- 

 nadoes and Hailstorms of April and May 1888 in the Doab and Rohil- 

 khand. Babu Asutosh Mukhopadhyay contributes three papers on pure 

 Mathematics — " On some applications of Elliptic Functions to problems 

 of mean values " and on the " Geometi-ic Interpretation of Monge's Dif- 

 ferential Equation to all Conies." Our Vice-President, Mr. Wood- Mason, 

 has a short notice of a neolithic Celt fi'om Jashpur in the Chutia Nagpur 

 District, besides a paper on the Ethiopian and Oriental representatives 

 of the Mantodean sub-family Vatidoi. Dr. Alcock has given us a con- 

 tinuation of the valuable papers on the results of the cruises of the 

 Indian Marine Survey Steamer "Investigator" under Commander Car- 

 penter, R. N., including an important paper on the Fishes of the Bay 

 of Bengal. Of Botanical papers there are three — one by Dr. Gr. King, 

 C. I. E., F. R. S., on the Flora of the Malayan Peninsula ; Dr. A. Barclay 

 gives a list of the Uredinece of Simla, and Dr. Prain describes some new 

 species of Pedicidaris. Mr. A. Pedler gives a paper on the Volatility of 

 Mercury and its compounds, and Mr. Anderson a note on Indian Botifers. 



The second supplement is a reprint of some Tables of Metric 

 Weights and Measures, prepared by myself with the assistance of Mr. 

 T. A. Pope, and revised by Mr. W. H. Cole, M. A., at the Survey of 

 India Office, Dehra Dun. They were mainly intended for use in my own 

 office, but as they appeared likely to be useful for general purposes, they 

 have been published separately, and Colonel Thuillier, the Surveyor 

 General, was kind enough to obtain the permission of Government to 

 their being printed as a siTpplemcnt to the Society's Journal before the 

 type was liroken up. 



