576 
NATORE 
[Apr 
[APRIL UI, 1907 
ammonia per kilowatt hour.—The age of the calcareous 
strata in the neighbourhood of Athens: Const. A. 
Ktenas. 
April 2.—M. A. Chauveau in the chair.—The calculation 
of the inferior contraction of the sheet flowing over a weir 
with sharp edge and moderate height, and fitted with a 
horizontal plate above: J. Boussinesq.—An extension of 
the summation method of M. Borel: A. Buht.—The 
nature of the body extracted from certain rich alloys of 
nickel and tin: Em. Vigouroux. Following the methods 
described in a previous paper, the substance NiSn has 
been isolated as a crystalline powder, showing brilliant 
facets under the microscope. It is non-magnetic, and has 
a density of 8-44, the density calculated from its com- 
position on the assumption of no contraction being 7-93. 
—The influence of manganese salts on alcoholic ferment- 
ation: E. Kayser and H. Marchand. The _ increased 
yield in alcohol resulting from the addition of minute 
proportions of manganese salts has been shown in a 
previous paper. It is now shown that yeast thus treated 
preserves its acquired properties through several gener- 
ations, and the practical applications of this fact are 
indicated.—Rectal gills in the larve of Simulium 
damnosum. The adaptation of a larva of Simulium to 
life in the streams of equatorial Africa: E. Roubaud. 
—The nephro-poietic activity of the blood and of the 
kidney in the course of the renal regenerations: P. 
Carnot and A. Leli¢vre.—The evolution of carbon, water, 
and ash as a function of the age in plants: J. Tribot. 
—Some seismic constants deduced from the earthquake of 
April 4, 1904: E. Oddone. 
DIARY OF SOCIETIES. 
THURSDAY, Arrit rt. 
RovaL INSTITUTION, at 3.—The Birth and Affinities of Crystals: Prof. 
Henry A. Miers, F.R.S. 
MaTHEMATICAL Society, at 5.30.—A Theorem in the Theory of 
Dr. H. F. Baker. 
FRIDAY, Aprit 12. 
RoyaL INSTITUTION, at g. —Conservation of Historic Buildings and 
Frescoes: Prof. A. H. Church, F.R.S. 
LNSTITUTION OF CIVIL ENGINEERS, at 8.—An Migeineers Visittto Japan 
and Canada: R. W. Allen. 
MALACOLOGICAL SOcIETY, at 8.—Notes on New Zealand Polyplacophora, 
with Descriptions of Five New Species: H. Suter.—Descriptions of New 
Mollusca from New Caledonia: G. RB. Sowerhy —Some New Species of 
Drymeus from Peru, Mexico, &c. : S. I. Da Costa.—A New Species of 
Vallonia from India: G. K. Gude. 
INSTITUTION OF MECHANICAL ENGINEERS, at 8.—Continued discussion :— 
Petrol Motor-Omnibuses : W. Worby Beaumont. 
Rovat ASTRONOMICAL Society, at 5.—Early and late Perseids : W. F. 
Denning.—Determinations of Personal Equation depending on 
Magnitude, made with the Transit-Circle and the Heliometer at the 
Royal Observatory, Cape of Good Hope: Sir D. Gill and S. S. Hough.— 
Determination of the Secular Perturbations of the Minor Planet Ceres, 
arising from the Actions of the Eight Major Planets : C. J. Merfield.— 
The Electric Arrangements of an Observatory : W. E. Cooke.—Probable 
Papers: The Perturbations of Halley’s Comet: P. H. Cowell and A. C. 
D. Crommelin.—On the Value of the Solar Parallax from the Greenwich 
Photographs of Eros, 1899-1400: Royal Observatory, »>Greenwich 
(Communicated by the Astronomer Royal). 
SATURDAY, Aprrit 13. 
Roya INsTtruTION, at 3.—Studies in Magnetism: Prof. Silvanus P. 
Thompson, F.R.S. 
Functions : 
MONDAY, Aprit ts. 
Society or Arts, at 8. —Detergents and Bleaching Agents used in Laun- 
dry Work: Prof. Herbert Jackson. 
TUESDAY, Aprriv 16. 
Roya INSTITUTION, at 3.—Wings and Aéroplanes : 
F.R.S. 
Society oF Arts, at 8.—Joinery and Furniture Making: A. Romney 
Green. 
RovAaL STATISTICAL SOCIETY, at 5. 
ANTHROPOLOGICAL INSTITUTE, at.8.15.—Note on some Palzolithic and 
Neolithic Implements from East Lincolnshire: S. H. Warren.— 
Exhibition of Flints from Cornwall: A. L. Lewis and S. H. Warren. 
INSTITUTION OF CiviL ENGINEERS, at 8.—The Pyrmont Bridge: P. 
Allan.—Swing Bridge over the River Avon at Bristol: W. H. B. Savile. 
WEDNESDAY, Aprrit 17. 
GeoLocicat Society, at 8.—The Toadstones of Derbyshire: their 
Field-Relations and Petrography: H. H. Arnold-Bemrose.—Data 
bearing on the Age of Niagara Falls: Prof. J. W. W. Spencer. 
Royat Microscoricat Society, at8.—On the Podura Scale: E. M. 
Major B. F. S. Baden- 
Prof. G. H. Bryan, 
Nelson.—Exhibition of Slides of Foraminifera: A. Earland 
Society OF ArTs, at 8.—Aérial Navigation: 
Powell. 
Rovat METEOROLOGICAL Society, at 7.30.—Phenomenal Rainfall in 
Suya, Fiji, August 8, 1905: R. L. Holmes —Temperature around the 
British Islands in Relation to the Gulf Stream: R. Strachan.— Weather 
regarded as a Function of Climate: L. C. W. Bonacina. 
NO. 1954, VOL. 75} 
THURSDAY, Avriv 18. 
Roya Society, at 4.30.—Prolable Papers: On Reciprocal Innervation 
of Antagonistic Muscles: Tenth Note: Prof. C. S. Sherrington, F.R.S. 
Fatty Degeneration of the Blood ; S. G. Shattock and L. S. Dudgeon.— 
(1) The Kate of the Assumption of Chloroform by the Blood during 
Anesthesia ; (2) Fur ction ofthe Red Corpuscles in Chloroform Anzsthesia : 
G. A. Buckmaster and J. A. Gardner.—The Fermentation of Glucosides 
by Bacteria of the Typhoid-coli Group, and the Acquisition of New 
Fermenting Powers by Lacid/us Dysentertae and uther Micro-orgarisms : 
F. W. Twort. 
Roya INsTITUTION, at 3.—Tbe Birth and Affinities of Crystals : Prof. 
Henry A. Miers, F.R.S. 
LINNEAN Society, at 8:—On the (Ecologic Functions of Stolons and 
Cleistogamous Flowers: J. C. Shenstone.—On the (Ecologic Aspect of 
Constitutional Variaticn in Fruit-culture: A. O. Walker.—On an 
Aberrant Form of Coccide : Hugh Scott.—Some Results of Inoculation 
of Leguminous Plants: Piof. W. B. Bottomley —Aah/bits; Nepal 
Barley and other Cereals cultivated at High Altitudes in Tibet: Dr. 
George Henderson.—Photographs of Sections of Woods: J. A. Weale.— 
Lantern Slides of Witches’ Brooms: J. Saunders. 
INSTITUTION OF ELECTRICAL ENGINEERS, at 8.—Flexibles : 
on the ‘esting of Rubber: A. Schwartz. 
CHEMICAL SociETy, at 8.30.—The Magnetic Rotation of Hexatriene, 
CHy:CH.CH:CH.CH :CHag, and its Relationship to Benzene and 
other Aromatic Compounds, also its Refractive Power: Sir W. H. 
Perkin.—Aromatic Azoimides, Part i., /#-Hydroxyphenylazoimide: M. 
QO. Forster and H. E. Fierz.—The Action of Hydrogen Peroxide. on 
Potassium Cyanide: O. Masson.—The Action of Ethyl Oxalate on 
Thioacetanilide and its Homologues: S. Ruhemann.—Measurements of 
the Velocities of Saponification of the -Menthyl and ¢/Bornyl Esters of the 
Stereoisomeric Mandelic acids; A. McKenzie and H. B. Thompson.— 
Indican: Preliminary Notice: A. G. Perkinand W. P. Bloxam.—Cupric 
Nitrite: P. C. Ray.—The Constituents of the Essential Oil of American 
Pennyroyal : Occurrence of a Dextro-Menthone: M. Barrowcliff.—The 
Action of Tribromopropane on the Sodium Derivative of Ethyl 
Acetcacetate ; T. E, Gardner and W. H. Perkin. 
FRIDAY, Aprit 19. 
Roya InsTiTuTION, at 9.—Nerve as a Master of Muscle: 
Sheirington, F.R.S. 
with Notes 
Prof. (Crass 
CONTENTS. 
Mechanism of the World. ByJ.L.E.D. .... 553 
The Mathematical Aspect of Spectroscopy. By 
Gplies ae Bas Se aROo a Do Ge! 
Origin of the English Nation. * By W.A. Craigie . 555 
The) Rainfalliof North\Germany "35, . . ees go 
Our Book Shelf :— 
‘© The Zoological Record,” Vol. xlii—R. L.. . . . 557 
Webb: ‘‘ The Principles of Horticulture. A Series 
of Practical Scientific Lessons”, . 557 
Fisher: ‘‘ Dr. Schlich’s Manual of Forestry,” Vol. iv. /. 558 
Schafer: ‘‘Tke Essentials of PstelSey Descdaiye 
and Practical” . . Mo Sa SS 
de Nansouty: ‘‘ Actualités scientifiques ” 558 
Letters to the Editor: — 
A Hydraulic Analogy of Radiating Bodies for Illus- 
trating the Luminosity of the Welsbach Mantle. 
(With Diagram.)—Prof. R. W. Wood... . 558 
Retardation of Electroscopic Leak by means of recog- 
nised Radio-active Substances.—Dr. W. S. 
Lazarus-Barlow .. . 559 
Atmospheric See-Saw Phenomenon and the Occurrence 
of Typhoon Storms.—Wilhelm Krebs 560 
Early Reference to Red-light Treatment of Small- “pox. 
—Alfred Sang .. Brick: co ~5\519) 
The Lyrid Meteors. —John R. Henry argh ites okey e200) 
Gyroscopic Apparatus for Steadying sae (Zllus- 
trated.) By G. R. Dunell ... . 7 ts Coe GOL 
British Nests and Eggs. (///ust7 rate a). 5 562 
The Origin of ‘‘ Bottom Waters” in the Northern 
Seas, 4 ==: 563 
The Commemoration ‘of Lord Lister’ s Eightieth 
Birthday: 7 ccgiegs os): a. ss. =p cgleant) tela a 
INGtessea ar PEO CHGmnn er NcleetAi (no S25) 
Our Astronomical Column: i— 
Comet 1907a@.. . as) 509 
The Brightness of the Sky near the Sun’s Limb . 569 
Radial Velocity of 7 Piscium . . . Boy ac 569 
Simultaneous Observations of Jupiter . x8 60 6 569 
The Sun as a Variable Star eet 569 
Effectsiof Pruning on Eiruit iveesau .. saes nee 569 
Standards and Exact Measurement. ByJ. L. M.. 570 
The Influence of Parasites on their Hosts. . . . . 571 
The Belgian International Balloon Service 572 
Terrestrial Physics in the United States esas) 
University and Educational Intelligence. . . . . 573 
SocietiessandrAcademuesi is) See eee -, 574 
DiaryofSocieties: 70) sacs) sa een salen NTC 
