VI 
Grimshaw Harry, F.C.S. — Note on tlie Presence of Sulphur in Illumi- 
nating Gas, p. 51. Note on the Presence of Arsenic in Paper 
Hangings, p. 122. 
Gwyther R. F., M.A. — On the Conditions of the Motion of a portion of 
Fluid in the Manner of a Rigid Body, p. 29. Additions to the 
paper c On an Adaptation of the Lagrangian Form of the Equations 
of Fluid Motion,’ p. 85. 
Hager Herman. — List of Famines, Severe Winters, &c„ from a.d. 1100 
to 1315, p. 64. 
Hart Peter. — A Sulphuretted Hydrogen Apparatus, p. 96. 
Johnson William H., B.Sc. — O n the Relation of Electrical Resistance 
to the Chemical Composition of Steel Wire, p. 125. 
Joule J. P., D.C.L., LL.D., F.R.S. — Note on Sulphuric Acid produced by 
Gas Lights, p. 124. 
Mackereth Rev. Thomas, F.R.A.S., F.M.S. — On Gravitation, p. 77. 
Mc.Coll Hugh, B.A. — On the Growth and Use of a Symbolical Language, 
p. 103. 
Melville James Cosmo, F.L.S. — On some Curious Forms of Fresh 
Water Mollusca from Lake Tanganyika, p. 117. 
Murphy Joseph John, F.G.S. — On the Addition and Multiplication of 
Logical Relatives, p. 71. 
Plant John, F.G.S.— On Pendant Nests of a Gregarious Moth from 
Venezuela, p. 111. 
R awson Robert, Assoc. I.N.A. — First Resolvents of the Quartic 
Qj 
if + atf + wy- X2 = 0 ” (*) 
and the Cubic 
ay B + 3 by* + 3 cyN- m — 0 ( 2 ) 
p. 144. 
Reynolds Professor Osborne, M.A., F.R.S. — Some further Experi- 
ments on the Cohesion of Water and Mercury, p. 38. 
Schorlemmer Professor Carl, F.R.S. — On the History of the Artificial 
Preparation of Indigo, p. 31. 
