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DIARY OF SOCIETIES. 
THURSDAY, Novemper 6. 
Royat Society, at 4.30.—The Soil Solution and the Mineral Con- 
stituents of the Soil: A. D, Hall, W. E. Brenchley, and L. M. 
Underwood.—Studies in Heredity. II. Further Experiments in Crossing 
British Species of Sea Urchins: Prof. E. W. MacBride.—Synthesis by 
Sunlight in Relationsbip to the Origin of Life ; Synthesis of Formaldehyde 
from Carbon Dioxide and Water by Inorganic Colloids acting as ‘I'rans- 
formers of Light Energy : Prof. B. Moore and T. A. Webster.—'lhe 
Trypanosomes causing Dourine (Mal de Coit or Beschiilseuche): Dr. B. 
Blacklock and Dr. W. Yorke.—Postural and Non-Postural Activities of 
the Mid-Brain: T. G. Brown.—The Nature of the Coagulent of the 
Venom of Echis carinatus : J. O. W. Barratt. 
FRIDAY, NovemBER 7." 
Junior Institution or Encinerrs, at 8.—Wood Waste, &c., as Fuel for 
Gas Producers: G. E. Lygo. 
Geo .ocists’ AssociaTIon, at 8.—Annual Conversazione. 
SATURDAY, Novemser 8. 
British Psycuol.ocicat Society, at 3.30,—A Comparative Study of 
Normal and Sub-normal Children by Means of Mental Tests: Dr. A. R. 
Abelson.—A Reaction Pendulum, and a Dise, illustrative of Weber's Law, 
for Use in Class Teaching : Prof. J. Brough.—Observations on the Process 
of Learning and Relearning in Mice and Rats: Miss M. E. Maceregor.— 
A priori Argument for the Existence of a Cerebral Centre for Affection : 
Dr. A. Wolgemuth. 
MONDAY, NovemMBrR ro. 
Rovat GEOGRAPHICAL Society, at 8.30.—The Work and Adventures of the 
Northern Party of Captain Scott's Antarctic Expedition: Raymond E. 
Priestley. ~ 
TUESDAY, NovemBeEr 1:. 
INSTITUTION or Crvitt Encinerrs, at 8.—The Construction of the ‘‘ White 
shat Dock and adjoining Quays at Southampton: F. E. Wentworth- 
e1ldas. 
ZooLoGIcaL Society, at 8.30,—On Freshwater Decapod Crustacea (Families 
NO. 2297, VOL. 92| 
NATURE 
[NovEMBER 6, 1913 
Potamonidz and Palzmonidz) collected in Madagascar by the Hon. Paul 
A. Methuen: Dr. W. T. Calman.—On a Collection of Reptiles and 
Batrachians made by Dr. H. G.F. Spurrell, in the Colombian 
Choco: G. A. Boulenger.—A Revision of the Cyprinodont Fishes cf the 
Subfamily Peeciliine : C. Tate Regan.—Sponges in Waterworks: Prof. 
W. N. Parker.—I'wo new Actinians from the Coast of British 
Columbia : Prof. J. Playfair McMurrich. 
MINERALOGICAL SOCIETY, at 5.30.—A Crystalline Basic Copper Phosphate 
from Rhodesia: A. Hutchinson and A. M. MacGregor.—(1) On the 
Meteoric Stone of Wittekrantz, South Africa: (2) On the Remarkable 
Similarity in Chemical and Mineral Composition of Chondritic Meteoric 
Stones: Dr. G. T. Prior.—Notes on the Minerals occurring in the 
neighbourhood of Meldon. near Okehampton, Devonshire: A. Russell.— 
On a Calcium-iron-garnet from China: J. B. Scrivenor. 
THURSDAY, NovemBeER 13. 
Concrete INsriTUTE, at 7.30.—Presidential Address: E. P. Wells. 
INSTITUTION OF ELECTRICAL ENGINEERS, at 8.—Pressure Rises: W. 
Duddell. 
Roya Socixrty, at 4.30.—Probable Paters: The Preparation of Eye-pre- 
serving Glass for Spectacles: Sir William Crookes.- On an Inversion 
Point for Liquid Carbon Dioxide in regard to the Joule-Thomson Effect : 
A. W. Porter.—Negative After-Images and successive Contrasts with Pure 
Spectral Colours: A. W. Porter and Dr, F. W. Edridge-Green.—The 
Positive Ions from Hot Metals: Prof. O. W. Richardson.—(r) The 
Diurnal Variation of Terrestrial Magnetism.—(2) A Suggestion as to the 
Origin of Black Body Radiation: G. W. Walker. 
FRIDAY, NovemMBeER 14 
Roya ASTRONOMICAL SOcIETY, at 5. 
Puysica Society, at 8.—On the Thermal Conductivity of Mercury by the 
Impressed Velocity Method: H. R. Nettleton.—On Polarisation and 
Energy Losses in Dielectrics :; Dr. A. W. Ashton.—A Lecture Experiment 
fa illustrate Ionisation by Collision and to show Thermoluminescence: F. 
. Harlow. 
ALCHEMICAL Society, at 8.15 (at The International Club, Regent Street, 
S.W.)—The Hermetic Mystery: Mme. Isabelle de Steiger. 
CONTENTS. PAGE 
German School Chemistry. By Prof. Arthur 
Smiithells, F.R.S: . 60 2 2 2 scp eke 
Zoological Bibliographies and Catalogues ... . 
‘he science of Forestry’. < . 57. <1.) 3 
Gur Bookshelf . . 2 . 4% 1s is) «5s si pe be) en 
Letters to the Editor :— 
Philosophy of Vitalism.—Prof. E. W. MacBride, . 
0) 2S Perey a EL 
The Piltdown Skull and Brain Cast.—Prof. Arthur 
Keith, F.R.S. 2.2 (oon) =o) = ee 
Pianoforte Touch.—Prof. G. H. Bryan, F.R.S.. ., 292 
The Light Energy Required to Produce the Photo- 
graphic Latent Image.—P. G. Nutting. ... . 
An Aural Illusion. —T. B, Blathwayt 
Natural History and Travel. (///ustrated.) By R. 1, P. 
Prof. Noguchi's Researches on Infective Diseases. 
By Stephen Paget . 
Edward Nettleship, 
PaPaONS 30.5. 
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Ornithological Notes. By R.L. ....5%55 0% 
The Synthesis of Glucosides by Means of Ferments 
Physics at the British Association. ....... 
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