Ill 



CONTENTS 



OF VOL. 156. 



I. On Calorescence. By Professor J. Tyio)all, LL.D. Carrib., F.R.S., Member of the 



Academies and Societies of Holland, Geneva, Gottingen, Zurich, Halle, Marlurg, 

 Breslau, Upsala, Cherbourg, la SocietS Philomathique of Paris, Cam. Phil. Soc. &c. ; 

 Professor of Natural Philosophy in the Royal Institution and the Royal School of 

 Mines pfige 1 



II. A Supplementary Memoir on the Theory of Matrices. By A. Cayley, Esq., F.R.S. 25 



III. Synthetical Researches on Ethers. — No. 1. Synthesis of Ethers frmn Acetic Ether. 



By E. Frankland, F.R.S., and B. F. Duppa, Esq : ... 37 



^ IV. On the Fossil Mammals of Australia. — Part II. Description of an almost entire 

 Skull of the Thylacoleo camifex, Owf.^, from a freshwater deposit, Barling Bowns, 

 Queensland. By Professor Owen, F.R.S. , &c 73 



V. Sixth Memoir on Radiation and Absorption. — Influence of Colour and Mechanical 



Condition on Radiant Heat. By Professor J. Tyndall, LL.B., F.R.S., Member 

 of the Academies and Societies of Holland, Geneva, Gottingen, Ziirich, Halle, 

 Marburg, Breslau, Upsala, Cherbourg, la Societe Philomathique of Paris, Cam.Phil. 

 Soc. &c. ; Professor of Natural Philosophy in the Royal Institution and the Royal 

 School of Mines 83 



VI. Addition to the Memoir on Tschirnhausen's Transformation. By Arthur Cayley, 



F.R.S. . 97 



VII. On the Development of Striated Muscular Fibre. By Wilson Fox, M.D. Bond., 



Professor of Pathological Anatomy at University College, London. Communicated 

 by Dr. Sharpey, Sec. R.S. 101 



yVIII. On the Structure and Development of the Skull in the Ostrich Tribe. By William 

 Kitchen Parker, F.Z.S. Communicated by Professor T. H. Huxley, F. R.S. 113 



