x Contents. 
PAGE 
On the Indications of Molecular Action in the Telephone. By R. M. 
Ferguson, Ph.D., ....... 615 
Sketch of the Arrangement of Tables of Ballistic Curves in a 
Medium resisting as the Square of the Velocity, and of the Appli- 
cation of these Tables to Gunnery. By Edward Sang, . . 637 
On some Physical Experiments relating to the Function of the Kid- 
ney. By David Newman, Glasgow. Communicated by Professor 
M‘ Kendrick, ....... 648 
Note of a Method of Studying the Binocular Vision of Colour. By 
John G. M‘Kendrick, M.D., ..... 654 
On the Genus Rhizodus. By Dr R. H. Traquair, . . .657 
On the Anatomy of a recent Species of Polyodon, the Polyodon 
gladius (Martens), taken from the river Yangtsze-Kiang, 450 miles 
above Woosung. Part III., being its Viscera of Organic Life. By 
P. D. Handy side, M.D., . . . . . . 660 
A Mechanical Illustration of the Vibrations of a Triad of Columnar 
Vortices. By Sir William Thomson, .... 660 
Fourth Report of Boulder Committee, with Remarks. ByD. Milne 
Home, Esq., ....... 660 
Remarks by David Milne Home, LL.D., Convener of the Society’s 
Boulder Committee, on presenting the Committee’s Fourth Report 
at a Meeting of the Society, 20th May 1878, . . . 692 
On the Splitting up of Electric Currents, as detected by the Tele- 
phone, and the founding thereon of a Sounder to call attention 
from one Telephone to another. By R. H. Bow, R.E., . . 707 
An Account of some Experiments on the Telephone and Microphone. 
By James Blyth, M.A., . . . . . .711 
Note on a Variation of the Microphone. By R. M. Morrison, 
D.Sc., . . . . . . . .712 
On the Action of Heat on some Salts of Trimethyl-Sulphine. 
Part II. By Professor Crum Brown and J. Adrian Blaikie, 
B.Sc., . . . . . . . .712 
On a Class of Determinants. By Mr J. D. H. Dickson, Tutor of St 
Peter’s College, Cambridge, . . . . .714 
On the Wave-Forms of Articulate Sounds. By Professor Fleeming 
Jenkin, F.R.S., and J. A. Ewing, B.Sc., .... 714 
On the Electric Conductivity of the Bars employed in his Measure- 
ments of Thermal Conductivity. By Professor Tait, . .718 
On the Biliary Secretion, with reference to the Action of Chola- 
gogues. Part II. By Professor Rutherford, F.R.SS. L. and E., 
and M. Vignal, ....... 718 
On a New General Method of Preparing the Primary Monamines. 
By R. Milner Morrison, D.Sc., . . . . .721 
On the Preparation and Properties of Pure Graphitoid and Adaman- 
tine Boron. By R. M. Morrison, D.Sc., and R. Sydney Marsden, 
B.Sc., . . . . . . . .721 
On Colour in Practical Astronomy, spectroscopically examined. By 
Professor Piazzi Smyth, . . . . . .721 
