xxx. ( Annual Report. 



Observatory, Greenwich ; the Meteorological Office, London ; 

 the Manchester Astronomical Society ; the Director of the 

 Geological Survey of India ; the Academie Royale, Brussels ; 

 the Bataviaasch Genootschap van Kunsten en Wetenschappen, 

 Batavia ; the Yale University Press, New Haven, Conn., U.SA. ; 

 the University of Washington Library, Seattle; the Bureau of 

 American Ethnology, , and the Smithsonian Institution, Wash- 

 ington; and the Department of Commerce, United States Coast 

 and Geodetic Survey. 



The Meteorological Magazine is presented by the Meteoro- 

 logical Office, London. The Indian Institute of Science 

 (Journal), Bangalore, has been placed on the Society's list of 

 exchanges. The Chemical Trade Journal is being presented 

 by Mr. G. K. Davis ; The Engineer, by Messrs. Ormandy and 

 Moore; and The Textile Recorder, 03^ Mr. Frank Nasmith. 

 The Contract Journal is not now subscribed for; and The 

 Aeronautical Journal and The Journal of the Royal United 

 Service Institution are no longer received. 



The library continues to be satisfactorily used for reference 

 purposes. 357 volumes have been borrowed from the library 

 during the past year. The number of books borrowed during 

 the previous year was 434, and during 1918-19, 283. 



Certain duplicate sets of periodicals have been disposed of 

 during the year. 



The Society has not yet obtained certain journals, of German 

 and Austrian origin, the delivery of which was interrupted 

 by the War. It is hoped to purchase the back numbers of 

 these journals as the Society's funds permit, priority being 

 given to journals most needed by members. 



The publication of the Society's Memoirs and Proceedings 

 has been continued under the supervision of a new and active 

 Editorial Committee. During the year volume 63 (1918-19), 

 and volume 64 (1919-20), part I, of the Memoirs and Proceedings 

 have been published. The remainder of volume 64 (complete 

 in part II) and volume 65 (1920-21), part I, are in the printer's 

 hands. A List of Instructions to Authors has also been 

 prepared. 



Donations. 



The Society has received from Mr. C. W. Duckworth a unique 

 set of hydrometers, made by Mr. John Baptiste Ronchetti about 

 45 years ago (the set consists of six Twaddell's hydrometers 

 for liquids heavier than water, with one for lower specific 

 gravities, i.e., .625 to .850) ; and from Engineer Commander E- 

 C. Smith a photographic reproduction of the Society's engrav- 

 ing of Peter Ewart. 



