168 
NABORE 
[JUNE 15, 1899 
Gautier.—Stellar photographs taken with the large telescope of 
the Observatory of Meudon, by M. H. Deslandres. The 
telescope used had a great focal length (25 times the aper- 
ture, 60 cm.); the photographs taken of the moon, Jupiter, 
Saturn, and nebul are said to compare well with the earlier 
work of Pickering, Scheiner, and Lord Rosse.—Remarks 
on the preceding communication, by M. J. Janssen.— 
On the determination of reference points in the spectrum, by M. 
Maurice Hamy.—On indeterminate equations of two or three 
variables which have only a finite number of solutions in prime 
numbers, by M. Edmond Maillet.—On the partial differential 
equations of the second order with real characteristics, by M. J. 
Coulon.—On the calculation of the constant of rectilinear 
diameters, by M. E. Mathias. The method given for the 
determination of the constant a@ is applied to the observations of 
Knietsch on chlorine. The value of the constant in this case is 
0°5872, showing that the assumption made by Thorpe and 
Ricker that a=1 is wanting in generality.—New galvano- 
metric method, by M. Fery. When the torsional couple acting 
on the suspended portion of the galvanometer is weak, consider- 
able uncertainty is introduced into the results by the uncertainty 
of the zero. By measuring the angular velocity with which 
the suspended system starts off, this difficulty is avoided.— 
On the use of potassium chlorate in explosives of the ammonium 
nitrate class, by M. H. Le Chatelier. From a solution contain- 
ing potassium chlorate and ammonium nitrate, crystals of very 
constant composition and containing 5 per cent. of the former salt 
can be separated by modifying the temperature and composition 
of the mother liquor. These crystals, used instead of pure 
ammonium nitrate in safety explosives, have a greater certainty 
of detonation.—On the effect of low temperatures upon certain 
steels, by M. F. Osmond. The results of the experiments upon 
certain alloys of nickel and iron are in general agreement with 
those of Dewar and Fleming upon the same subject, the steel 
acquiring magnetic properties at the temperature of liquid air. 
—Action of phosphoretted hydrogen upon copper, cuprous 
oxide, and ammoniacal solutions of copper salts, by M. E. 
Rubénovitch. Metallic copper reacts with PH, at 180°-200° 
giving hydrogen and Cu,P. Cuprous oxide reacts with the same 
gas at ordinary temperatures, giving the same copper phosphide 
and water. Various salts of copper, if treated in ammoniacal 
solution with hydrogen phosphide, behave differently according 
to the nature of the salt.—On the aloins, by M. E. Léger. 
Two distinguishing tests are given for barbaloin, and several 
derivatives are described prepared from the aloes of Natal.—On 
some derivatives of the unsymmetrical tetra-methyl-diamido- 
diphenylethane, by M. A. Trillat.—Study of some substituted 
diphenyl-anthrones, by ML. Tétry.—On some colour reactions 
of the oxycelluloses, by M. Edm. Jandrier.—Contribution to 
the study of mineral waters : on the Croizat spring, near Mont 
Dore, by M. F. Parmentier. The results of an analysis of the 
water are given. Iron is absent, but salt and arsenic are pre- 
sent in notable quantities.—On mineral waters containing 
fluorine, by M. Parmentier. The waters analysed by the author 
contain no trace of any fluorine compound.—Modification of 
the respiration of plants produced by varying the temperature, 
by M. W. Palladine.—On the systematic position of Zr¢cho- 
thyton and neighbouring forms in the classification of fungi, by 
MM. L. Matruchot and Ch. Dassonville.-—The coal-bearing 
strata of the central Pyrenees, by M. Caralp.—Concerning the 
effect of blood serum in preventing the action of rennet, by 
MM. L. Camus and FE. Gley. Reclamation of priority against 
M. A. Briot.—Coagulating action of the liquid from the external 
prostate of the hedgehog on the contents of the seminal ves- 
icles, by MM. L. Camus and E. Gley.—Bunge’s law, and 
the mineral composition of the newly-born infant, by M. 
L. Hugounenq.—Lesions of the nervous centres in experimental 
epilepsyeen of absinthe origin, by M. G. Marinesco. 
LS piAr Or SOCIETIES” 
THURSDAY, JUNE 15 
Roya Society, at 4.—Prof. A. Michelson will read a Paper.—A Com- 
parison of Platinum and Gas Thermometers at the International Bureau 
a Weights and Measures at Sévres: Dr. J. A. Harker and Dr. P. 
Chappuis.—A Preliminary Note on the Life-History of the Organism 
found in the Tsetze Fly Disease: H. G. Plimmer and Dr. J. Rose 
Bradford, F.R.S.—The Colour Sensations in Terms of Luminosity : 
Captain Abney, F.R.S.—On a Quartz-Thread Gravity Balance: R 
Threlfall, F.R.S.—On the Orientation of Gieek Temples, being the 
Results of some Observations taken in Greece and Sicily in May 1808 : 
F. C. Penrose, F.R.S.— And other Papers. 
LINNEAN Society. at 8.—Contributions to the Natural History of Lake 
Urmi and its Neighbourhood: R. T. Giinther.—A Systematic Revision 
NO. 1546, VOL. 60] 
of the Genus Najas: Dr. A. B. Rendle.—On the Anatomy and System- 
atic Position of some Recent Additions to the British Museum Collection 
of Slugs: Walter E. Collinge.-—The Edwardsia Stage of Lebrunia, and 
the Formation of the CEs »phagus and Gastro-ceelomic Cavity: J. E. 
Duerden. 
Cuemicat Society, at 8.—Ballot for the Election of Fellows.—On the 
Decomposition of Chlorates, with special reference to the Evolution of 
Chlorine and Oxygen: W. H. Sodeau.—The Action of Hydrogen 
Peroxide on Formaldehyde: Dr. A. Harden.—Homocamphoronic and 
Camphononic Acids: A. Lapworth and E. M. Chapman.—Action of 
Silver Compounds on a-Dibromocamphor : A. Lapworth.—The Colouring 
Matter of Cotton Flowers : A. G. Perkin.—Experiments on the Synthesis 
of Camphoric Acid: H. A. “Auden, W. H. Perkin, jun., andeJ. L. Rose,— 
Methylisoamylsuccinic Acid, Part I.: W. T. Lawrence. 
SATURDAY, June 17. 
Assocration.—Excursion to Lichfield and Cannock. 
Prof. C. Lapworth F.R.S., and Prof. W. W. Watts. 
MONDAY, iene 19- 
Rovat GEOGRAPHICAL SOCIETY, at 8 30 —Exploration between Lake 
Rudolf and the Nile : Colonel J. R. L. Macdonald, R.E. 
Vicroria [NSTITUTE, at 4.30.—Address by the Right Hon. Sir Richard 
Temple, Bart. 
TUESDAY, June 20. 
ZOOLOGICAL Society, at 8.30.—On the Species of Cassowaries : Hon. 
Walter Rothschild. —On the Remains of a New Bird, Prafhaethon 
shrubsolei, gen. et sp. nov., from the London Clay of Sheppey ee Wis 
Andrews.—On the Antipatharian Corals of Madeira: J. Y. Johnson. 
MINERALOGICAL Society, at 8.—On the Constitution of the Mineral 
Arsenates and Phosphates III. Plumbogummite and Allied Minerals : 
Mr. Hartley —Note on Plumbogummite : Prof. Miers.—On a Pyroxene 
from South Africa: Mr. Bowman.—On the Chemical Composition of 
Tetrahedrite : Messrs. Prior and Spencer.—(1) On a Constituent of the 
Meteoric Iron of Youndegin, Western Australia; (2) On the Meteoric 
Stones which fell at Mount Zomba, British Central Africa, on January 
25.1899: Mr. Fletcher. 
Roya STATISTICAL SOCIETY, at 5.—The Flag and Trade: A. W. Flux. 
Roya PHoToGRAPHIc SOCIETY, "at 8.—Retouching : Redmond Barrett. 
WEDNESDAY, Juxe 21. 
GEOLOGICAL SOCIETY at 8. —Agglomerates, Ashes, and Tuffs in the Car- 
boniferous Limestone Series of Congleton Edge: Walcot Gibson and 
Wheelton Hind.—Ironstone Fossil Nedules of the Lias: E, A. Walford. 
GEOLOGISTS’ 
Directors : 
—Additional Notes on the Glacial Phenomena of Spitsbergen: E. J. 
Garwood. 
RoyaL METEOROLOGICAL SOCIETY, at 4.30.—Heavy Falls o Rain 
recorded at the Observatories connected with the Meteorological Office, 
1871-98: Robert H. Scott, F.R.S.—Average Height of the Barometer in 
London: R. C. Mossman. A New Self-recording Anemoscope : Joseph 
Baxendell. 
Roya MicroscoricaL Socigty, at 8.—Nctes on some Sponges belenging 
to the Clionidz obtained at Madeira: J. Y. Johnson. 
CONTENTS. PAGE 
The Anthropology of Baden. ByR.L.. . 145 
Limnology . . P . ae 146 
Heart and Science. " By H.W. B. ES SF 147 
Our Book Shelf :— 
Sébire: ‘‘Les Plantes Utiles du Sénégal—Plantes 
indigenes—Plantes Exotiques.” —J. M. Hillier 148 
Elsden: ‘* Applied Geology”  . - 148 
Lubbock: ‘On Buds and Stipules.” - ay B. F. oo. Beets) 
Younghusband : ““The Philippines and Round 
About ” aes Ag) 
Tennant: ‘ The Slide Valve Simply Explained.’ pay ess 149 
Letters to the Editor :— 
Expansion of Solids by Heat. (Z//zstra/ed.)—Horace 
Darwin. . 149 
Bessel Functions. —Prof. A. Gray, RS 149 
Larve from the Head of an Antelope. —Richard 
Crawshay ; Walter F. H. Blandford LSO 
Walrus. —Kumagusu Minakata b 150 
Strawberry Cure for Gout.—Donald Ferguson 150 
The Fresh-water Pearls of America. By R. L. 150 
The Geology of Mont Blanc. (///ustrated.) By Prof. 
TG. Bonney; hak: See , Cebu me RRS 
The Berlin Tuberculosis Congress (1899). II. By 
Dr. F. W. Tunnicliffe. aes nits ibn ot loot! 
Notes : 155 
Our Astronomical Column: — 
Tempel’s Comet (1873 II.) . . 161 
Return of Comet Holmes (1892 III.) 161 
Comet 1899 a (Swift) ..... OMAP eo j 161 
White Spot onijupitenr ema. : a 161 
Two New Variable Stars. . . eee LOL 
The Bore at Moncton, Bay ‘of Fundy. “(With 
Diagram.) . 161 
The Boyle Lecture on the Perception of Musical 
Mone: . oe ee 3 LO 
The Darmstadt Museum . 5 164 
University and Educational Intelligence 164 
Societies and Academies ....... 166 
Diary of|Societicsi;) 4 -aeeeecer rat) fe 168 
