CONTENTS. 
(A.) 
VOL. 180. 
I. On the Mechanical Conditions of a Swarm of Meteorites, and on Theories of 
Cosmogony. By G. H. Darwin, LL.D., F.R.S., Fellow of Trinity College and 
Plumian Professor in the University of Cambridge .page 1 
JI. A Class of Functional Invariants. By A. D. Forsyth, M.A., F.R.S., Fellow of 
Trinity College, Cambridge .71 
III. Total Eclfse of the Sun observed at Caroline Island, on Qth May, 1883. By 
Captcdn W. de W. Abney, C.B., R.E., F.R.S. .119 
lY. On Evagooration and Dissociation. —Part VIII. A Study of the Thermal Pro¬ 
perties of Prog>yl Alcohol. By Professor William Eamsay, Ph.D., F.R.S., 
and Professor Sydney Young, D.Sc .137 
V. The Radio-Micrometer. By C. V. Boys, Assoc. Royal School of Mines, Demon¬ 
strator of Physics at the Science Schools, South Kensington. Communicated 
by Professor A. W. Pucker, F.R.S. . . . *.159 
VI. The Waves on a Rotating Liquid Spheroid of Finite EUipticity. By G. H. 
Bryan, B.A. Communicojted by Professor G. H. D^^rwin, F.R.S. . . 187 
VII. On the Magnetisation of Iron and other Magnetic Metals in very Stroiig Fields. 
By J. A. Ewing, B.Sc., F.R.S., Professor of Engineering in University College, 
Dundee, and William Low. 221 
