CONTENTS. 



MEMOIRS. 



I. A Preliminary Account of the Life-history of the Common 

 House Fly {Muscat, domestica L.). By C. Gordon 

 Hewitt, B.Sc pp. i — 4 



(Issued separately, October 23rd, igoS). 



II. On some Points of Chemical Philosophy involved in the 

 Discovery of Radium and the Properties of its Com- 

 binations. By Henry Wilde, D.Sc, D.C.L., F.R.S. 

 With Table, ... ... ... ... ... ... pp. 1 — 13 



(Issued separately, December iqth, igoO.) 



III. A Journey to North-East Rhodesia during 1904 and 1905. 



By S. A. Neave, M.A., B.Sc. With Plate. .. pp. 1—7 



(Issued separately , J anuary 24th, IQOJ.) 



IV. Notes on a Collection of Terrestrial and Fluviatile Mollusca, 



made in North-Eastern Rhodesia, during 1905, by Mr. 

 Sheffield A. Neave, M.A., B.Sc. By James Cosmo 

 Melvill, M.A., F.L.S., and Robert Standen. With 

 Plate. ... ... ... ... ... ... ... pp. 1 — 16 



(Issued separately, February 20th, igof). 



V. On a Collection of Mammals made by Mr. S. A. Neave in 

 Rhodesia, North of the Zambesi, with Field Notes by the 

 Collector. By R. C. Wroughton ... ... ... pp. 1 — 39 



(Issued separately , IS I arch 13th, igof). 



VI. The Grouping of the Chemical Elements. By C- E. 



Stromeyer, M.Inst.C.E pp. 1 — 15 



(Issued separately, March yth, igof). 



VII. On the Structure of Syringodendron, the Bark of Sigillaria. 



By Katharine H. Coward, B.Sc. With Plate. pp. i— 6 



(Issued separately, March nth, igof). 



