No. 433. New Series.— Decade IV.— Vol. VII.— No. VII. Price Is. 6d. nett. 



THE 



GEOLOGICAL MAGAZINE 



lonthlij Jouiiual of (Seologij. 



WITH WHICH IS INCORPORATED 



"THK OKOLOGHST." 



EDITED BY 



HENRY WOODWARD, LL.D., F.R.S., F.G.S., &c. 



ASSISTED BY 



ROBERT ETHERIDGE, F.R.S. L. & E., F.G.S., &c., 



WILFRID H. HUDLESTON, M.A., F.R.S. , F.L.S., F.G.S., &c., 



GEORGE J. HINDE, Ph.D., F.R.S., F.G.S., &,c., and 



HORACE BOLINGBROKE WOODWARD, F.R.S., F.G.S. 



JULY, 1900. 



OOISTTEnSTTS. 



I. Original Articles. page 



1. Colonel Feilden's Contributions 

 to Glacial Geology. By Professor 

 ']'. G. BoNNEY, D.Sc, LL.D., 

 F.R.S 289 



2. Order of Consolidation of 

 Minerals in Igneous Rocks. By 

 Professor W. J. Sollas, LL.D., 

 D.Sc, FR.S 295 



3. AwordonGedldgicalllypothesis. 

 By Professor H. Macaulay 

 PosNETT, LL.D 298 



4. Woodwardian Museum Notes : 

 Salter's Undescribed Species. 

 By F. R. CowpER Reed, M.A., 

 F'G.S. (Plate XII.) 303 



5. ForMiiiiniferal Limestones from 

 Sinai By I'^ked^^-rick Chapman, 

 A.L.S., F.R.M.S 308 



6. The Development of Brown Mica 

 from Augit;', etc. By James 

 Parsons, B.Sc. Lond 316 



Original Articles — continved. page 



7. Rate of Erosion of some River 

 Valleys. By C. C. Brittlebank, 

 Esq 320 



8. On theNaparimaRocks, Trinidad. 

 By R. J. Lechmere Guppy, 

 Esq 322 



9. Two New Species of Ostracoda. 

 Bv Fredk. Chapman, A.L.S., 

 F'R.M.S. (With six Figures.) 325 



II. Reviews. 



1. Dr. II. 0. Forbes' Stone Iiiiple- 

 ment.s from Egypt 326 



2. Dr. C. W. Andrews' Christmas 

 Island Monograph 330 



3. R. D. Oldham's Great Indian 

 Earthquake 331 



III. Reports and Proceedings. 

 Geological Society of London — 



1. May 23, 1900 33-3 



2. June 6, 1900 335 



LONDON: DULAU & CO., 37, SOHO SUUAKK. 



(tr The Volume for 1899 of the GEOLOGICAL MAGAZINE is ready, 

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