Index. 
Letts (E. A.) and Buaxe (R. F.). On 
a Simple and Accurate Method for 
Estimating the Dissolved Oxygen in 
Fresh Water, Sea Water, Sewage 
Effluents, &c., 454. 
—— On some Problems connected with 
Atmospheric Carbonic Anhydride, and 
on a New and Accurate Method for 
Determining its Amount Suitable for 
Scientific Expeditions, 436. 
Letts (E. A.), Brake (R. F.), CanpweEL 
(W.), and Hawrnorne (J.). On the 
Nature and Speed of the Chemical 
Changes which occur in Mixtures of 
Sewage and Sea-water, 333. 
Lyburn (E. St. J.). Mining and Mine- 
rals in the Transvaal and Swazieland, 
12. 
Prospecting for Gold in Co. Wick- 
low, and an Examination of Irish Rocks 
for Gold and Silver, 422. 
Marconi System of Wireless Telegraphy 
for the Control of Public and other 
Clocks (Gruss), 46. 
Martin (C.). Notes on Temperature 
Observations made at Dunsink Obser- 
vatory during the Hclipse of the Sun 
on May 28, 1900, 362. 
Mitus (W.S.). See Ryan (H.). 
Mining and Minerals in the Transvaal 
and Swazieland (Lyburn), 12. 
Nature’s Operations which Man is com- | 
petent to Study (Sronzy), 79. 
Nebula surrounding Nova Persei (WiL- 
son), 556. 
Notation, a New Thermo-Chemical (Pot- 
LOK), 39. 
Nova Persei, Nebula surrounding (WiL- 
SON), 556. 
Pantopoda from the Arctic Seas (Car- 
PENTER), 279. 
Pollok (J. H.). 
Antrim, 33. ’ 
A New Thermo-Chemical Notation, 
496. 
The Kieselguhr of Co. 
Rain-Gauge, Fractionating (Joy), 283. 
Reynolds (J. H.). Recent Analyses of 
the Dublin Gas Supply, and Observa- 
tions thereon, 304. 
087 
Rio del Fuente of Western Mexico, and 
its Tributaries (Doy1E), 60. 
Ryan (H.). On the Preparation of Ami- 
doketones, 519. 
— Onthe Synthesis of Glucosides, 508. 
Ryan (H.) and Mri1s (W.S.). On the 
Synthesis of Galactosides, 506. 
Sedimentation, Inner Mechanism of 
(Joy), 325. 
Sewage and Sea-water, Nature and Speed 
of Chemical Changes occurring in 
(Letts, Buake, CaLDWELL, and Haw- 
THORNE), 333. 
Seymour (H. J.). On the Occurrence of 
Cassiterite in the Tertiary Granite of 
the Mourne Mountains, County Down, 
583. 
On the Progressive Dynamo-Meta- 
morphism of a Porphyritic Andesite 
from County Wicklow, 568. 
Silicates in Igneous Rocks, Influence of 
Pressure on Separation of (Joty), 378. 
Silicates in Igneous Rocks, Theory of 
Order of Formation of (Joxy), 298. 
Soap Solution, Concentration of, on the 
Surface of the Liquid (Hatt), 56. 
Stoney (G. J.), Survey of that Part of 
the Range of Nature’s Operations which 
Man is competent to study, 79. 
Supersaturated Solutions, Theory of the 
Molecular Constitution of (HartTiEy), 
629. 
Telescope of the Paris Exhibition of 1900, 
Results that may be expected from it 
(GRruBB), 5d. 
Thermo-Chemical Notation, a new (PoL- 
LOK), 30. 
Time Signals, Correction of Errors in the 
Distribution of (GruBB), 37. 
Transvaal and Swazieland, Mining and 
Minerals in the (Lysurn), 12. 
Waters, Fresh and Salt, Chemical Ana- 
lysis of (ADENEY), 346. 
Wigham (J. R.). The Application of the 
Kitson Light to lLight-Houses and 
other places where an extremely Power- 
ful Light is required, 471. 
