Contents. 
Vll 
The Pallial Complex of Dolabella. By J. D. F. Gilchrist, 
M.A., B.Sc., Ph. D. Communicated hy Professor Ewart, F.K.S. 
(From the Natural History Laboratory of the University of Edin- 
burgh.) (With a Plate), ...... 
Coordinates versus Quaternions. By Professor Cayley, . 
On the Intrinsic Nature of the Quaternion Method. By Prof. 
Tait, ........ 
On the Application of Van der Waals’ Equation to the Compres- 
sion of Ordinary Liquids. By Prof. Tait, 
Note on Magnetic Induction in Nickel Tubes. By Professor 
C. G. Knott, D.Sc., and A. Shand, Esq., 
Note on the Volume Changes which accompany Magnetisation 
in Nickel Tubes. By Professor C. G. Knott, D.Sc,, F.E.S.E., 
and A. Shand, Esq., ...... 
Note on Professor Cayley’s Proof that a Triangle and its Kecipro- 
cal are in Perspective, By Thomas Muir, LL.D., 
A Problem of Sylvester’s in Elimination. By Thomas Muir, LL.D., 
Note on Dr Muir’s Paper, “ A Problem of Sylvester’s in Elimina- 
tion,” By Professor Cayley, ..... 
The Eeproduction of the Edible Crab (Cancer pagurus). By 
Gregg Wilson, M.A., B.Sc., Natural History Laboratory, 
University of Edinburgh. Communicated by Prof. J. C. Ewart, 
M.D., F.E.S., 
On the Chemical Composition of Sea- Water. By John Gibson, 
Ph.D., 
On a Theorem regarding the Difference between any Two Terms 
of the Adjugate Determinant. By Thomas Muir, LL.D., 
On the Measurement of Simple Eeaction Time for Sight, Hearing, 
and Touch. By Professor Eutherfurd, M.D., F.E.SS. Lond. 
and Edin,, ....... 
An Experiment on the Influence of Thyroid Feeding on the 
Proteid Metabolism in Man. By J. J. Douglas, M.B., C.M., 
F.E.C.P. Edin. (From the Research Laboratory of the Roijal 
College of Physicians of Edinburgh), .... 
Further Note on the Volume Changes which accompany Magnet- 
isation in Iron and Nickel Tubes. By Professor C. G. Knott, 
D. Sc., F.E.S.E., and A. Shand, Esq,, . 
Notes on a Peculiarity in the Form of the Mammalian Tooth. 
By J. Smith, M.D. (Illustrated), .... 
On the Absorption of Carbohydrates by the Intestinal Epi- 
thelium : An Experimental Inquiry into Pavy’s Theory of the 
Action of the Epithelium on Carbohydrates. By D, Noel 
Baton, M.D., F.E.C.P.E., and G. Lovell Gulland, M.D., 
F.E.C.P.E. (From the Resectrch Laboratory of the Royal College 
of Physicians of Edinburgh), ..... 
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