[ ] 
XI. On the DoMe TangenU of a Plane Curve. Bg A. Peg., F.B.S. page 198 
XII On the Bemtance of Glass Globes and Cglinders to Collapse from external pressure ; 
and on the Tensile and Compressive Strength of various hinds of Glass. By 
W.Faiebaien.IJs?., Thomas Tate, isg. ...... 
XIII. On the Atomic Weight of Graphite. By B. C. moom F.B.S Professor of Che- 
mistry in the University of Oxford, and President of the Chemical Society . . 
XIV On the Physical Phenrmena of Qladers.-Vovt I. Observations on the Mer de Glace 
By John Ttkdall, F.B.S., Membre de la SocUte Hollandaise des Sciences; la Societe 
de Physique et d’Histoire Naturelle de Geneve ; la Soeieti Philomathigue de 
Mitglied der Naturforschenden Gesellschaft, Zurich, der Gesellschaft zur Before- 
rung der Gesammt-rnurmssenschaften, Marburg, der K. Leap. AJcad. der Batm- 
forscher,Breslau, and Professor of Natural Philosophy at the Boyal Institution 
XV On the Veined Structure of Glaciers; with observations upon White lee-seams. Air- 
bubbles and Birt-bands, and remarks upon Glacier Theories. By John TiND-iLi 
F.E.S., Professor of Natural Philosophy, Moyal Institution 
XVI On the Fossil Mammals of Australia.— Pori I. Vescription of a mutilated Skull 
of a large Marsupial Carnivore (Thylacoleo camifex, Owen), from a calcareous 
conglomerate stratum, eighty miles S.W. of Melbourne, Yictorm. By Profess^ 
Owen, V.P.B.S. Ac., Superintendent of the Natural History Departments in the 
British Museum, and Fullerian Professor of Physiology in the Boyal Institution of 
e-, -r, • .... 309 
Great Britain 
XVII. On Colour-Blindness. ByViuAAmPoi.^,F.B.A.S.,F.G.S.,Mem. Inst. C.F., Pro- 
fessor of aril Engineering, University College, London. Communicated by 
Chaeles Manby, 
XVIII. On the Ova and Pseudova of Insects. By John Lubbock, Esq., F.R.S., 
F.G.8. 
XIX. On the Conic of Fivepointic Contact at any point of a Plane Curve. By 
A. Cayley, Esg., F.B.8. 
XX. The Bakeeian Lectuee. — Researches on Organo-Metallic Bodies. Fourth Memoii. 
E. Feankland, Ph.B., F.R.S., Lecturer on Chemistry at St. Bartholomews 
Hospital 
XXI. On the Isolation of the Organo-Metals, Mercuric, Stannic, and PlumUc Ethyls; 
and Observations on some of their Berivatives. Memoir. By Geoege 
Bowdlee Buckton, Esq., F.R.S., F.L.S., F.C.S 
XXII. Further Researches on the Grey Substance of the Spinal Cord. By J. Lockhaet 
Claeke, Esq., F.R.S ^ 
