Index. 
1007 
Salicylic Acid, its Action on Fer- 
ments, by A. B. Griffiths, 527. 
Saline Solutions, their Volumes com- 
pared with the Sum of the Volumes 
of their Constituents, by Mr J. 
Holms Pollok, 626. 
Salinity of the Water in the Firth of 
Forth, by Mr Hugh Robert Mill, 29. 
Salinity of the Tay Estuary and of St 
Andrews- Bay, by Mr Hugh Robert 
Mill, 347. 
Salts of the Halogens, their Resistance 
during Recrystallisation compared 
with some others and Glass, by Mr 
Thomas Andrews, 275. 
Sang (Edward), LL.D., on the Theory 
of the Tides, 4. 
Scottish Marine Station, Hygrometry 
of, by Mr H. N. Dickson, 950. 
Sensation, its Nature and Objective 
Cause, Pt. II., by Prof. Haycraft, 
961. 
Sex, Theory of, by Patrick Geddes, 911. 
Shoals. See Oceanic Shoals. 
Smith (Professor Michie) on the 
Zodiacal Light, and on the Origin 
of Atmospheric Electricity, 114. 
on Atmospheric Electricity at 
Dodabetta, 191. 
(Professor R.) — The Graphic 
Analysis of the Kinematics of 
Rigid Bar Mechanisms, 78. 
Smyth (C. Piazzi), Astronomer-Royal 
for Scotland. — The Visual, Grating, 
and Glass Lens Solar Spectrum in 
the year 1884, 174. 
Recent Photographs of Stars, 
191. 
Some Stereoscopic Photo- 
graphs, 310. 
Suow, Radiation from, by Mr John 
Aitken, 625. 
Solomon Islands. — Characters and 
Mode of Formation of the Coral 
Reefs in the Solomon Islands, by 
H. B. Guppy, M.B., 857. 
Solution, a Theory of, by W. W. J. 
Nicol, M.A., 27. 
Chemical Affinity and Solu- 
tion, by Mr W. Durham, 596. 
its Laws, by Mr William 
Durham, 779. 
Sowerby’s Whale ( Mesoplodon bidens), 
N otice of, byProf essorW.Turner, 279. 
Spectrum (Solar) as observed in 1884, 
by C. Piazzi Smyth, Astronomer- 
Royal for Scotland, 174. 
Spores of Parasitic Fungi, by Dr A. 
P. Griffiths, 771. 
Spey, Observations on. See Mill 
(Hugh Robert), B.Sc. 
Stars, Recent Photographs of, by C. 
Piazzi Smyth, Astronomer-Royal 
for Scotland, 191. 
Stevenson (Thomas), M. Inst. C.E., 
President, opens Session 1884-85 
with a Short Introductory Address 
and Obituary Notice of Sir Alex- 
ander Grant, 2. 
delivers an Address on Cer- 
tain Questions, of Maritime En- 
gineering Practice, 80. 
Notes on Experiments on 
Lighthouse Illuminants, 494. 
Stewart (Mr G. N.) — Thermal Effects 
of Tension in Water, 157. 
Stockman (Dr Ralph). — The Action 
of Benzoylecgonin, 771. 
Suberites domuncula , Anatomy of, 
by J. Arthur Thomson, M.A., 803. 
Sunrises (Remarkable) in December 
1884, 24. 
Supersaturation, by Mr W. W. Nicol, 
154. 
Synchronism, Hooke’s Anticipation 
of, 118. 
Tait (Professor) on an Improved 
Method of Measuring Compressi- 
bility, 2. 
Proof that the Mean Square 
Velocity of Two Points whose 
Velocities are p and q isg? 2 + g 2 , 21. 
Note on a Theorem of Clerk- 
Maxwell, 21. 
Note on a Singular Passage in 
the Principia, 72. 
Note on the Necessity for a 
Condensation-Nucleus, 78. 
on Evaporation and Condensa- 
tion, 91. 
on an Application of the 
Atmometer, 116. 
Hooke’s Anticipation of the 
Kinetic Theory of Gases, 116. 
The Effect of Temperature on 
the Compressibility of Water, 120. 
Effect of Pressure on the Tem- 
perature of Minimum Compressi- 
bility of Water, 155. 
on the Effect of Pressure on 
the Maximum Density Point of 
Water, 527. 
on the Distribution of Potential 
in a Thermo-Electric Circuit, open 
or closed, 172. 
on Knots (Amphicheirals), 175. 
Census of Ten-fold Knottiness, 
311. 
on the Foundations of the 
Kinetic Theory of Gases, 386. 
on Systems of Colliding 
Spheres, 527. 
on the Mean Free Paths in a 
