Contents. 
xi 
PAGE 
On the Colours of Thin Plates. By the Right Hon. Lord Rayleigh, 931 
Ueber Algebraische Knoten. By Professor Dr Fr. Meyer of 
Tubingen. Communicated by Professor Tait. (Plates XXXI.- 
XXXII.), 931 
On Amagat’s Manometre a Pistons libres. By Professor Tait, . 947 
On the Electrical Properties of Hydrogenised Palladium. By Pro- 
fessor Knott, . . . ' . . . . 947 
Electro-Chemical Reactions between Metals and Fused Salts. By 
Thomas Andrews, F.C.S., . . . . . . 947 
On the Hygrometry of Ben Nevis and of the Scottish Marine 
Station. By H. N. Dickson, Esq. Communicated by Professor 
Tait,. . . . . • . .950 
The Temperature of Loch Lomond and Loch Katrine during Winter 
and Spring. By J. T. Morrison, B.Sc. Communicated by Dr J. 
Murray, ........ 961 
Note on the Surface Temperature near a Tidal Race. By the same, 961 
Further Remarks on Dew. By John Aitken, Esq., . . .961 
The Nature of the Objective Cause of Sensation. Part II., Taste. 
By Professor J. B. Hay craft, . . . . .961 
Review of the Session. By the Chairman, . . . .975 
Donations to the Library, . . . . . .979 
Index, ........ 1001 
