TRANSACTIONS (NEW SERIES) VOLUME I. » 
(Already Published.) 
PART, ™ 
1.—On Great Telescopes of the Future. By Howarp Gruss, F.R.A.S. (November, 1877.) 
2.—On the Penetration of Heat across Layers of Gas. By G. J. Sronny, M.A., F.R.S. (November, 
1877.) . 
3.—On the Satellites of Mars. By WrentwortH Erck, LL.D. (May, 1878.) 
4,—On the Mechanical Theory of Crookes’s, or Polarization Stress in Gases. By G. J. STONEY, 
M.A., F.R.S. (October, 1878.) 
5.—On the Mechanical Theory of Crookes’s Force. By GrorGr FRANCIS FitzGERALD, M.A., 
F.T.C.D. (October, 1878.) 
6.—Notes on the Physical Appearance of the Planet Mars, as seen with the Three-foot Reflector at 
Parsonstown, during the Opposition of 1877. By Joun L. E. Dreyer, M.A. With Plates I. | 
and II. (November, 1878.) 
