vin 



CONTENTS. 



PAKT III. (1893-94.) 



NTM1SEK 



XXV. On Lepidophloios, and on the British Species of the Genus. 

 Kobert Kidston, F.E.S.R, F.G.S. (With Two Plates), 



By 



PACK 



529 



XXVI. On the Fossil Flora of the South Wales Coal Field, and the Relation- 

 ship of its Strata to the Somerset and Bristol Coal Field. By 

 Robert Kidston, F.R.S.E., F.G.S. (With a Plate), 



565 



XXVII. On Bistratification in the Growth of Languages, with Special 

 Reference to Greek. By Emeritus Professor Blackie, . 



615 



XXVIII. On the Number of Dust Particles in the Atmosphere of Certain Places 

 in Great Britain and on the Continent, ivith Remarks on the 

 Relation 'between the Amount of Dust and Meteorological Pheno- 

 mena. Part III. By John Aitken, F.R.S. (With Three 

 Plates), . . . . ... . .621 



XXIX. On the Variations of 'the Amount of Carbonic Acid in the Ground- 

 Air {Grund-Luft of Pettenkofer). By C. Hunter Stewart, 

 B.Sc., M.B. (From the Public Health Laboratory of the 

 University of Edinburgh.) (With Three Plates), . . 695 



PART IV. (1894-95.) 



XXX. Note on some Fossils from Seymour Island, in the Antarctic Regions, 

 obtained by Dr Donald. By G. Sharman and E. T. Newton. 

 (With a Plate), . . . . . 



707 



XXXI. On the Partition of a Parallelepiped into Tetrahedra, the Corners of 

 which Coincide with Cornel's of the Parallelepiped. By Professor 

 Crum Brown. (With Two Plates), . . . .711 



XXXII. On the Manganese Oxides and Manganese Nodules in Marine 

 Deposits. By John Murray, LL.D., Ph.D., of the Challenger 

 Expedition, and Robert Irvine, F.C.S., . . . . 721 



