11 v. ■ ■* 1888 



TRANSACTIONS 



OF Tin: 



IOYAL SOCIETY OF EDINBURGH. 



VOL. XXXIII. PART II.— FOR THE SESSION 1886-87. 



CONTENTS. 



ST. XII. 



XIII. 



XIV. 

 XV. 



XVI. 

 XVII. 



XVIII. 

 XIX. 



XX. 



XXI. 



XXII. 

 XXIII. 



XXIV 



XXV. 



Page 



On the Foundations of the Kinetic- Theory of Oases. II. By Professor Tait, . 251 



Tables for Facilitating the Computation of Differential Refraction in Position 



Angle and Distance. By the Hon. Lord M'Laren, . . 279 



On a Class of Alternating Function*. By Thomas Muir, LL.D., . . 309 



Expansion if Functions in terms of Linear, C'y/indric, Spherical, and Allied 



Functions. By P. Alexandkk, M.A. Communicated by Dr T. Mum, . 313 



On Cases of Instability in Open Structures. By E. Sang, LL.D., . . 321 



On the Fossil Flora of the Radstoek Series of /he Somerset and Bristol Coal 

 Field (Upper Coal Measures). Parts I., II. By Robert Kidston, F.K.S.E., 

 F.G.S. (Plates XVIII.-XXVIIL), ..... 335 



A Diatomaceous Deposit from North Tolsta, Lewis. By John Rattray, M.A., 



B.Sc, of H.M. "Challenger" Commission, Edinburgh. (Plate XXIX.), . 419 



On the Minute Structure of the Eye in certain Cymothoidte. By Frank E. 

 Beddard, M.A., F.R.S.E., FZ.S., Prosector to the Zoological Society, and 

 Lecturer on Biology at Guy's Hospital. (Plate XXX.), . . . 443 



Report on the Pennatulidn dredged by H.M.S. "Porcupine!' By A. Milnes 

 Marshall, M.D., D.Sc, M.A., F.R.S., Beyer Professor of Zoology in the 

 Owens College ; and G. H. Fowler, B.A., Ph.D., Berkeley Fellow of the 

 Owens College, Manchester. Communicated by John Murray, Esq. 

 (Plates XXXI., XXXIL), ....... 453 



On the Determination of the Curve, on one if the coordinate planes, which forms 

 the Outer Limit of the Positions of the point of contact of an Ellipsoid which 

 always touches the three planes of reference. By G. Plarr, Docteur es- 

 sciences. Communicated by Professor Tait, .... 465 



On the Partition of Energy between the Translator y and Rotational Motions of 



a Set of Non-Homogeneous Elastic Spheres. By Professor W. Burnside, . 501 



A Contribution la our Knowledge of the Physical Properties of Methyl-Alcohol. 

 By W. Dittmar, F.R.SS. Lond. & Edin., and Charles A. Fawsitt. 

 (Plate XXXIIL), ........ 509 



On the Thermal Conductivity of Iron, Copjper, and German Silver. By A. 

 Criohton Mitchell, Esq. Communicated, with an Introduction, by Pro- 

 fessor Tait. (Plates XXXIV, XXXV), ..... 535 



Critical Experiments on the Chloroplatinate Method for the Determination of 

 Potassium, Rubidium, and Ammonium; and a Redetermination of the 

 Atomic Weight of Platinum. By W. Dittmar and John M'Arthur, . 561 



[Issued April 13, 1888.} 



