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THURSDAY, Marcu 5 
RovaL Society, at 4.30.—The Action of Light on Chlorophyll: H. 
Wager.—Formaldehyde as an Oxidation Product of Chlorophyll Ex- 
tracts: C. H. Warner.—The Controlling Influence of Carbon Dioxide 
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The Functional Correlation between the Ovaries, Uterus and Mammary 
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and the Relation of this System to the Contractile Vascular System in the 
Leech, Hirudo medicinalis: Dr. J. F. Gaskell. 
Roya InstiruTion, at 3.—Heat and Cold: Prof. C. F. Jenkin. 
Cuitp Stupy Society, at 7-30:—The Sense of Humour in Children: Miss 
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LiInNEAN Society, at 8.—Results of Crossing Euschistus variolarius and 
&. servus with Reference to the Inheritance of an Exclusively Male 
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FRIDAY, Marcu 6. 
Juxtor INSTITUTION OF ENGINEERS, at 8.—Maihak Indicator and Bottchers 
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GEotoctstTs’ AssociaTIoNn, at 8.—A Study of Ballstone and the Associated 
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SATURDAY, Marcu 7. 
Rovat INsTITUTION, at 3.—Recent Discoveries in Physical Science: Sir 
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MONDAY, Marcu o. 
Rovar GEOGRAPHICAL SOCIETY, at 8.3c.—The Nigeria-Kamerun Boundary 
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TUESDAY, Marcu 1o. 
Se INSTITUTION, at 3.—Modern Ships. II. Ocean Travel: Sir John H. 
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RoyaL ANTHROPOLOGICAL INSTITUTE, at 8.15.—The Magical Siege of 
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INsTITUTION OF Civit ENGINEERS, at 8.—Further Discussion: Rail-steels 
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WEDNESDAY, Marcu 11. 
Rovat Soctety or Arts, at 8.—Bacterial Treatment of Peat, and its 
Application as a Fertiliser: Prof. W. B. Bottomley. 
GEoLocicaL Society, at 8.—An Apparently Palzolithic Drawing on a 
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THURSDAY, Marcu 12. 
Royat Socrery, at 4.30.—Probable Papers : Noteona Functional Equation 
Employed by Sir George Stokes : Sir James Stirling.—The Mercury Green 
Line A=5461 as Resolved by Glass and Quartz Lummer Plates and on its 
Zeeman Components: Prof. J. C. McLellan and A. R. McLeod.—The 
Electrical Condition of a Gold Surface During the Absorption of Gases | 
NO. 2314, VOL. 93] 
[Marcu 5, 1914 
and their Catalytic Combustion: H. Hartley.—The Diffusion of Electrons 
through a Slit: J. H. Mackie.—The Rate of Solution of Hydrogen by 
Palladium: Dr. A. Holt. : 
Roya InstiTuTION, at 3.—Heat and Cold: Prof. C. F. Jenkin. 
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FRIDAY, Marcu 173. 
Rovat INSTITUTION, at 9.—An Indian State: Sir Walter R. Lawrence, 
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MALACOLOGICAL SOCIETY, at 8.—Diagnosis of Four New Land Shells from 
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of Ennea from Southern Nigeria: H. B. Preston.—A Synopsis of the 
Family of Venendz. II.: A. J. Jukes-Browne. 
ROYAL ASTRONOMICAL SOCIETY, at 5. ; a 
Junior InstiTuTION OF ENGINEERS, at 8.—Lightning Conductors and 
their Tests: F. H. Taylor. 
ALCHEMICAL SOCIETY, at 8.15.—Roger Bacon: R. Rowbottom. , 
PHYSICAL SOCIETY, at 8.—Time Measurements of Magnetic Disturbances 
and their Interpretation : Dr. C. Chree.—The Ratio ot the Specific Heats 
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The Asymmetric Distribution of the Secondary Electronic Radiation pro- 
duced by X-Radiation: A. J. Philpot. 
SATURDAY, Marcu 14. d ; ’ 
Roya INsTITUTION, at 3.—Recent Discoveries in Physical Science: Sir 
J. J. Thomson. 
CONTENTS. PAGE 
Radio-Active Elements and the Periodic Table. By 
Technical Mycology. By Prof. R. T. Hewlett... 2 
Human) Mathematics?) “By*D=BaMine. ce eee 
Our Bookshelf). 5 24... io oe ae ee 
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Active Nitrogen.—-Prof. H. B. Baker, F.R.S.; 
(Hon) RK: Justrutt, PRIS =>: or ed ereyree ae ame 
Remarkable Upper-Air Records at Batavia.—Dr. 
W.. ‘van ‘Bemmiel)len ) icp. 5-i Ga. oe 
The Vertical Temperature Distribution in the Atmo- 
sphere. Dr. jC 2Braak “0 2 ane 1 or ee ee 
Atomic Models and Regions of Intra-atomic Electrons. 
(With Diagram.)—Dr. A. van den Broek .... 7 
An Early Slide Rule-—David Baxandall ..... 8 
The Permeability of Echinoderm Eggs to Electrolytes. 
SS JtGhay Ose Gs pais ear eae cae ae 
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