INDEX 
Address, Opening, for Session 1890-91, 
by Sir Douglas Maclagan, President, 
2 . 
Aitken (John), F.R.S. On a simple 
Pocket Dust-Counter, 39. 
■ On a Method of Observing and 
Counting the Number of Water 
Particles in a Fog, 259. 
Alkyl Derivatives of Succinic Acid. 
See Succinic Acid. 
Anderson (John). Barograph ic Re- 
cord in theVicinity of a Tornado, 62. 
(W. S.). On the Action of 
Metallic and other Salts on Carbon- 
ate of Lime, 52. 
Barographic Record in the Vicinity of 
a Tornado, by John Anderson, 62. 
Barometric Curves (Diurnal) at Green- 
wich and at Kew, by Alexander 
Buchan, LL.D., 59. 
Ben Nevis Observatory. The Influ- 
ence of High Winds on the Baro- 
meter at the Ben Nevis Observatory, 
by Alexander Buchan, LL.D., 88. 
Birds, Soaring of, by William Froude, 
65. 
Bismuth. The Thermoelectric Posi- 
tions of Cobalt and Bismuth, by 
Professor Cargill G. Knott, 310. 
Blood, New Method for Estimating 
the Specific Gravity of, by John 
Berry Hay craft, M.D., D.Sc., 251. 
of the Invertebrata, by Dr A. B. 
Griffiths, F.R.S.E., 288. 
Brouncker’s Method, Extension of, to 
the Comparison of several Magni- 
tudes, by Edward Sang, 341. 
Brown (Professor Crum), and Walker 
(Dr James). The Electrolytic Syn- 
thesis of Dibasic Acids. Alkyl 
Derivatives of Succinic Acid, 95. 
Buchan (Alexander), LL. D. On a 
Difference between the Diurnal 
Barometric Curves at Greenwich 
and at Kew, 59. 
VOL. XVIII. 
Buchan (Alexander), LL.D. The In- 
fluence of High Winds on the Baro- 
meter at the Ben Nevis Observatory, 
88 
Buchanan (J. Y.), F.R.S. On the 
Occurrence of Sulphur in Marine 
Muds and Nodules, and its bear- 
ing on their Mode of Formation, 
17. 
On the Composition of some 
Deep Sea Deposits from the 
Mediterranean, 131. 
Burton (Prof. Cosmo Innes), Obituary 
Notice of, by William Marshall, xxi. 
Carbonate of Lime, the Action of 
Metallic and other Salts on, by 
Robert Irvine, F.C.S., and W. S. 
Anderson, 52. 
Cobalt, Electric Resistance of, at High 
Temperatures, by Professor Cargill 
G. Knott, D.Sc., 303. 
The Thermoelectric Positions 
of Cobalt and Bismuth, by Professor 
Cargill G. Knott, 310. 
Cretinoid (so-called) Foetus, Defective 
Endochondral Ossification in, 271. 
Dabs (Long Rough), 268. 
Lemon, or Lemon Sole, 268. 
Deep-Sea Deposits from the Medi- 
terranean, by J. Y. Buchanan, 
F.R.S., 131. 
Determinants, some hitherto unproved 
Theorems in, by Thomas Muir, 
LL.D., 73. 
Dibasic Acids. See Brown (Professor 
Crum), and Walker (Dr James). 
Dittmar (Dr W. ). On the Gravimetric 
Composition of Water, 320. 
Donations to the Library, 349. 
Duncan (Dr J. Matthews), deceased, 
Notice of in President’s Address, 
6 . 
Dust. On a simple Pocket Dust- 
Counter, by John Aitken, 39. 
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