408 
IAT ORAS, 
| FEBRUARY 21, 1907 
The 
number of 
tables 
lati- 
arised in three 
distribution in 
results are 
spots, the 
summ 
iY 
Guillaume. 
showing the 
tude, and the distribution of the facule in latitude.—The 
problem of Dirichlet; H. Lebesguc.—The non-applic- 
ability of two continuous regions of n and n+p dimensions : 
René Baire.—The channelled spectra ( f pare lel gratings : 
Georges Meslin. A mathemé itical discussion of the various 
been proposed in this connection, 
due to M. Garbe, whose theory is 
explanation of the phenomena. 
observed in a_ dissolved 
alkylation of- metallic 
hypotheses which have 
and in particular that 
shown to give a complete 
A singular state of matter 
chromic salt: Albert Colson.—The 
eyanides : H. Guillemard,—The catalytic reduction of un- 
saturated ethyl Darzens. An application of 
the Sabatier and Senderens reaction to the preparation of 
esters: G. 
ethyl propionate, isovalerate, and pelargonate from the 
corresponding unsaturated esters. The addition of two 
atoms of hydrogen to a whole series of acids of the type 
R.(CH,).C : CH.CO,H, a general method for the prepar- 
ation of which is described, can also be effected in this 
way. Examples of the application of the method in the 
aromatic and hydroarome itic series are given.—The 
transformation of primary saturated alcohols into the 
corresponding monobasic acids: H. Fournier. Alkaline 
permanganate has been shown to give oxalic acid with 
some primary alcohols. The author shows that if the con- 
ditions prescribed by him are followed, a yield of acid 
amounting to 75 per cent. of the theoretical can be 
obtained.—The presence of aldehydes in cheese and the 
part played by them in the formation of bitterness: A. 
Trillat and M. Sauton. Experiments are given establish- 
ing the presence of aldehydes in cheese, and also the 
existence of a relation between the quantity of aldehydes 
and the bitterness of the cheese.—Alternating currents of 
varying periods corresponding to musical sounds; the 
physiological effects of rhythmic alternating currents: 
Maurice Dupont.—Remarks on the preceding paper by 
also 
M. d’Arsonval.—Some phe nomena of biological adapt- 
ation by rhythmical anticipation: H. Piéron.—Ether 
anesthesia ; parallel with chloroform anzesthesia : Maurice 
Nicloux. A quantitative study of the distribution of ether 
in various organs of the body during anaesthesia. These 
quantities are greater with ether than with chloroform, 
and the ether is eliminated more  rapidly.—Lympho- 
sarcoma in the dog: A. Borrel.—The discovery of the 
marine Aquitanian in the middle part of the Rhone valley : 
L. Joleaud.—Some geothermal measurements -effected in 
the Pas-de-Calais basin: Félix Lenorince-Ringuet. 
DIARY OF SOCIETIES. 
THURSDAY, FEBRUARY 21. 
Royat Society, at 4.30.— The Estimation of Chloroform in the Blood of 
Anzsthetised Animals: G. A. Buckmaster and J. A. Gardner.—On 
Electrical Seed-Testing : Prof. T. Johnson.—On Longitudinal Symmetry 
in Phanerogamia: Prof. Percy Groom.—On the Inheritance of Flower- 
Colour in Antirrhinum majus: Miss M. Wheldale. 
Rova Insriturion, at 3.—The Minute Structure of Igneous Rocks and 
their Significance : Alfred Harker, F.R.S. 
CHEMICAL SoctgTy, at 8.30.—The Constitution of Oxyazo-compounds : 
W. B. Tuck.—The Influence of Solvents on the Rotation of Optically 
Active Compounds, Part ix., A New General Method for Studying Intra- 
molecular Change: T.S. Patterson and A. McMillan.—The Reduction 
Products of ortho- and para-Dimethoxybenzoin: J. C. Irvine and A. M. 
Moodie.—Replacement of Halogens by Hydroxyl, i., The Hydrolytic 
Decomposition of Hydrogen and Sodium Monochloroacetates by Water 
and by Alkali, and the Influence of Neutral Salts on the Reaction Veloci- 
ties : G. Senter.—The Reaction of Ammonium Salts with the Constituents 
of the Soil: A. D. Hall and C. T. Gimingham. 
LINNEAN Society, at 8.—The Percy Sladen Trust Expedition to the Indian 
Ocean, Introduction, Part i., Ceylon to Mauritius: J. Stanley Gardiner. 
—Land Nemerteans, with a Note onthe Distribution of the Group: R. C. 
Punnett.—Land' Crustaceans: L. A. Borradaile —Hymenoptera: P. 
Cameron.—Dragon Flies: F. F. Laidlaw.—Fourmis des Seychelles, 
Admirantes, Farquhar et Chagos: Prof. A. Forel.—Pycnogonidz : 
G. H. Carpenter. 
INSTITUTION oF ELECTRICAL ENGINEERS, at 8.—Lecture on ‘‘ Modern 
eee of Conduction of Electricity in Metals”: Prof. J. J. Thomson, 
FRIDAY, FEBRUARY 22. 
Lee INSTITUTION, at 9.—Flame in Gas and Petrol Motors: Dugald 
erk. 
Puysicat Society, at 5.—Transformer Indicator Diagrams: Prof. Lyle. 
—lonisation of Gases by a Particles of Radium: Prof. Bragg.—A Micro- 
manometer : B. Roberts. 
INSTITUTION OF CIviL ENGINEERS, at 8.—Impurities in Boiler Feed- 
water; their Nature, Effect and Elimination: F. E. Walker. 
NO. 1947. VOL. 75] 
SATURDAY, FEBRUARY 23. 
Roya INstTITUTION, at 3.—Réntgen, Kathode, and Positive Rays: 
J. J. Thomson, F.R.S. 
Tue Essex Fiecp Cius (at Essex Museum of Natural History, Stratford), 
at 6.30.—Notes on Dr. Fletcher's Report on the Sanitary Circumstances 
of the Village of Coggleshall: 'T. V. Holmes.—Botanical Surveying in 
Bae an Account of Ecological Work on the Bouche d’Erguy: 
r. G. Hill. 
Prof- 
MONDAY, FEBRUARY 25. 
Royar. GEOGRAPHICAL SociETY, at 8.30.—Inland Waterways: G. G, 
Ch sholm. 
InsTITUTE oF ACTUARIES, at 5.—Comparative Bonuses under Whole 
Life and Endowment Assurances: H. J. Rietschel. 
TUESDAY, FEBRuARY 26. 
Royat INSTITUTION, at 3.—The Visual Apparatus of Man and Animals: 
Prof. William Stirling. 
InstiruTION oF Civit_ Encineers, at 8.—On the Limits of Thermal 
Efficiency in Internal-Combustion Motors: Dugald Clerk. 
WEDNESDAY, FEBRUARY 27. 
GeoLocicaL Society, at 8.—On the Lower Ordovician Succession in 
Scandinavia: W. G. Fearnsides.—The Occurrence of Pseudomorphous 
Pebbles of Pyrites at the Crown Reef Mine, Witwatersrand: C. Baring 
Horwood. 
Society oF Arts, at 8.—Modern Type-writers and Accessories : 
E. Morton. 
Arthur 
THURSDAY, Fesruary 28. 
Rovat Society, at 4.30.—Probable Papers: On the Dispersion in Artificial 
Double Refraction: L. N. G. Filon—The Occlusion of the Residual 
Gas by the Glass Walls of Vacuum Tubes: A. A. Campbell Swinton.— 
The Theory of Correlation for any Number of Variables, treated by a 
New System of Notation: G. Udny Yule. 
SATURDAY, Marcu 2. 
Roya INsTITUTION, at 3.—Réntgen, Kathode, and Positiv Rays: Prof. 
J. J. Thomson, F. R.S. 
CONTENTS. PAGE 
Indian Trees. ByJ. F.D. . . Seren s, 1< ee Oy 
A Handbook to the Microscope. "By Thomas H. 
Blakesley é ai a. 386 
The Crustacea of Devon and Cornwall. By L. R. C. 387 
Palzontology for Students, By A.S.W. ... . 388 
Three Aspects of Electrical Engineering. By 
Maurice|Solomon) jr). cee eee 
Our Book Shelf :— 
Gamble: ‘‘ Penrose’s Pictorial Annual” . . 390 
Koch: ‘* Ei nfithrung in die mikroskopische Analyse 
der Drogenpulver’2 = is aeeeuiey -) olla) -eeO 
Letters to the Editor:— 
An Occurrence of Helium in the Absence of Radio- 
activity.—Hon. R. J. Strutt, F.R.S. .. 390 
The Rusting of Iron. —Prof. Wyndham R. 
Dunstan, F.R.S. .. . 390 
Tonisation and Anomalous Dispersion. —Prof. ‘R.W. 
Wood .. + 390 
A New Chemical Test for ‘Strength i in Wheat Flour.— 
cl SV V OO Ciaran. - 391 
The Flight of an Elongated ‘Shot. ne w. Sharpe HS 
The Problem of the Random Path. —Prof. Reginald 
A. Fessenden . . 392 
Speech Curves. (Zilustrated.) By Prof, Jobn ish 
McKendrick, F.R.S. .. . 5 abl do oe aioe 
Agricultural Education and Research. ee peo Bek! 
The University of Toronto. By Prof. A. B. 
Macallarmm phe bessaeemtan of cola cia a) stds oe 390 
Prof. J. F, W.von Bezold » 1)... 1... + 397 
Prof. NevA, Menschutkim ~~“. 1 = <0 cena es 
Notesana: olbs, wingarissua Ad gal Meee mateo mS OO 
Our Astronomical Column: — 
The Recent Solar Eclipse in India ....... . 402 
The late Dr. Roberts’s Celestial Photographs due ao ker 
A Lost Comet (1905/) ... . 4 eareiee Goa Oe 
TheiSpectrum)of Mira, ~~ yey eso =) ie oe 
Sun and Planet Chart. . - ie Snetipt Lenin ean 
Thirty-six New Variable Stars Alri gwon oS 2 402 
Seismological Notes. (J//ustrated.) By Prof. John 
Milne;yFoR SS. oe ee ne) a) oe no 
Science inIndia . . Big a COS) 
The Needs of the University of Cambridge whe tapeOAl 
University and Educational Intelligence. . . . . 404 
Societies and Academies ... . = « « « « « « « 405 
Diary of/Societies' jis cm) cul-tcsu-i use een 
