VI 
Contents. 
On the EeprocUictive Organs of Noctua pronuba. By A. B. 
Griffiths, Ph.D., F.R.S.(Edin.), &c., . . . . 
Data on the Phenomena of Colour-Blindness, chiefly derived 
from Foreign Sources. Gomidilecl and arranged hy Dr William 
Pole, F.R.S., F.R.S.E., 
Preliminary Note on the Compressibility of Aqueous Solutions, 
in connection with Molecular Pressure. By Professor Tait, . 
Elimination of Powers of Sines and Cosines between Two Equa- 
tions. By the Hon. Lord McLaren, .... 
Preliminary Account of Natural History Collections made on a 
Voyage to the Gulf of St Lawrence and Davis Straits. By Mr 
Alexander Rodger, University College, Dundee. Communi- 
cated by Professor D’Arcy W. Thompson, 
Abstract of Paper on the “ Rate of Fermentation of Sugars.” By 
W. G. Aitchison Robertson, M.D., D.Sc., F.R.C.P.E. {From 
the Physiological Laboratory, University of Edinburgh), . 
On the Penguins observed during the Sealing Voyage of the s.s. 
“Active” in the neighbourhood of Erebus and Terror Gulf. 
By C. W. Donald, M.B. Communicated by Professor D’Arcy 
W. Thompson, ....... 
Preliminary Note on the Hygrometric State of the Atmosphere 
at Ben Nevis Observatory. By Andrew J. Herbertson. Com- 
municated by Dr A. Buchan, ..... 
The Second and Fourth Digits in the Horse : their Development 
and Subsequent Degeneration. By J. C. Ewart, M.D., F.R.S., 
Regius Professor of Natural History, University of Edinburgh, 
Note on the Focus of Concavo-Convex Lenses the Surfaces of 
which are of Equal Curvature. By George A. Berry, M.B., 
F.R.C.S. Ed., 
Telegraphic Communication by Induction by Means of Coils. 
By Charles A. Stevenson, B.Sc., F.R.S.E., M. Inst. C.E. (With 
Two Plates), ....... 
On two Stereo-Isomeric Hydrazones of Benzoin. By Alexander 
Smith, B.Sc., Ph. D., . 
On certain Electrical Properties of Iron Occluding Gases. By 
S. Kimura, Rigakushi. (With Two Plates), 
Note on the Antecedents of Clerk-Maxwell’s Electrodynamical- 
Wave-Equations. By Professor Tait, . . . . 
The Rise and Progress of Anthropology. By Robert Munro, 
M.A., M.D. (With a Plate), ..... 
On the Compressibility of Fluids. By Prof. Tait, 
On a New Water-Bottle for Collecting Samples of Sea- Water 
from Moderate Depths. By H. N. Dickson, F.R.G.S., 
Hydrolysis in some Aqueous Salt Solutions. By James 
Walker, D.Sc., Ph.D., 
PAGE 
98 
108 
141 
145 
154 
164 
170 
177 
185 
192 
196 
201 
203 
213 
215 
245 
252 
255 
