Contents. 
Vll 
PAGE 
Exhibition of Photographs of large Sections of the Lnng. By Dr G. 
Sims Woodhead, ....... 348 
Mean Scottish Meteorology for the last Thirty-Two Years, discussed 
for Annual Cycles, as well as Supra-annual Solar Influences, on 
the basis of the Observations of the Scottish Meteorological Society, 
as furnished to, and published by, the Kegistrar- General of Births, 
Deaths, &c., in Scotland, after being computed for that Office at 
the Eoyal Observatory, Edinburgh. By the As.tronomer-Boyal 
for Scotland, ....... 348 
On Sir J ohn Leslie’s Computation of the Eatio of the Diameter of a 
Circle to its Circumference. By Edward Sang, LL.D., . . 348 
On the Four Surfaces of an Aplanatic Objective. By the Hon. Lord 
McLaren. (Plates XIV., XV.), ..... 355 
Quaternion Notes. By Professor Tait, . . . .379 
Exhibition of M. Amagat’s Photographs of the Crystallisation of the 
Tetrachloride of Carbon under Pressure alone. By the Secre- 
tary, . . . . . . . . .381 
On the Development and Life-Histories of the Food and other Fishes. 
By Professor W. Carmichael MTntosh, F.E.S., and E. E. Prince, 
Esq., . . . . . . . .381 
On certain Theorems mainly connected with Alternants (IL). By 
Professor Anglin, M.E.I.A., ..... 381 
Preliminary Note on a Method by means of which the Alkalinity of 
the Blood may quantitatively be Determined. By Professor J ohn 
Berry Haycraft and Dr E. T. Williamson, .... 396 
The Electrolytic Decomposition of Proteid Substances. By George 
N. Stewart, Esq., ....... 399 
On the Malpighian Tubules of Lihellula depressa. By Dr A. B. 
Griffiths, F.E.S. (Edin.), F.C.S. (Bond. & Paris), . . . 401 
On a Fungoid Disease in the Boots of Gucumis saliva. By Dr A. B. 
Griffiths, F.E,S. (Edin.), F.C.S. (Lond. & Paris). (Plate XVI.), .403 
On Fossil Fishes from the Pumpherston Oil Shale, with Exhibition 
of Specimens. By Dr E. H. Traquair, F.E.S., . . . 410 
On the Variation of Transition-Eesistance and Polarisation with 
Electromotive Force and Current Density. By W. Peddie, D.Sc. 
(Plate XVII.), 411 
The Metamorphosis of British Euphausiidse. By George Brook, Esq., 
and W. E. Hoyle, M.A. (Oxon.), ..... 414 
Notes on a Lucifer-like Decapod Larva from the West Coast of Scot- 
land. By George Brook, Esq., ..... 420 
On Invertebrate Blood removed from the Vessels, and entirely sur- 
rounded by Oil. By Professor John Berry Haycraft and E. W. 
Carlier, Esq., M.B., . . . . . . . 423 
On Laplace’s Theory of the Internal Pressure in Liquids. By Pro- 
fessor Tait, ........ 426 
