INDEX. 
Baker H. — On some Thionates, p. 9. 
Baxendell Joseph, F.R.A.S. — Transit of the Shadow of Titan across the 
Disc of Saturn, November 23rd, 1877, p. 104. 
Binney E. W., F.R.S., F.G.S., President. — On some Coal Measure Plants, 
and other Organic Remains from Spain, p. 5, Notice of a large 
Boulder Stone at Old Trafford, Manchester, p. 55. On the Meteor 
of December 31st, 1877, p. 67. Notice of a Fossil Plant found at 
Laxey, in the Isle of Man, p. 85. Three Letters from the late Sir 
William Fairbairn, Bart., F.R.S., a former president of the Society, 
to the late Professor Hodgkinson, F.R.S., also a former president 
of the Society, p. 141. 
Bottomley James, B.A., D.Sc. — Note on a Method for Determining the 
Coefficients in Chemical Equations, p. 94. On some Colorimetrical 
Experiments, p, 219. 
Boyd John. — On the Chiego or “Jigger” Flea (Pulex penetrans, L.), 
p. 90. 
Burghardt Charles A., Ph.D. — On the Origin of some Ores of Copper 
(Part I.), p. 27, Note on the Decomposition of Water by Iron- 
pyrites, p. 67. The Origin of some Ores of Copper (Part II.), 
p. 151. Note on the Occurrence of Dioptase on Chrysocolla, from 
Peru, p. 155. 
Chambers Charles, F.R.S. — On the Geometrical Representation of the 
Equation of the Second Degree, p. 58. 
Cockle Sir James, F.R.S. — Note on Envelopes and Singular Solutions 
p. 13. 
Cross Charles Frederick. — On the Retention of Saline Impurities by 
Hydrated Ferric Oxide, p. 49. 
Dale R. S., B.A., and C. Schorlemmer, F.R.S. — On Aurin, p. 146. 
