TRANSACTIONS (NEW SERIES) VOLUME I. 
(Already Published.) 
PART. 
1—On Great Telescopes of the Future. By HowsrpD Gruss, F.R.AS. (November, 1877.) 
2.—On the Penetration of Heat across Layers of Gas. By G. J. Stony, M.A., F.R.S. (November, 
1877.) 
3,—On the Satellites of Mars, By Wxentwortm Ercx, LL.D. (May, 1878.) 
4,—On the Mechanical Theory of Crookes’s, or Polarization Stress in Gases. . By G, J, STONEY, 
MA., F.R.S. (October, 1878.) 
