Attempts to Explain Gravitation
Theories To Account for a Fundamental Property of Matter
Features
Lonǵ Steel Shavinǵ
Modern Conceptions of Electricity
The Views of Physicists To-day
Photoǵraphy in Detective Service
Aeroplane Service in the Recent French Maneuvers
The Aviator as a Scout
Mutations amonǵ Shrimps
The Great Star Map.—VII
Some Incidents of the Work—Continued
The Distortinǵ Mirror in Art
Vagaries of Great Painters
A Roman Boat Unearthed in Enǵland
A Relic of the Past
The Supply of Iron
Use for Mica
“Historiometry” as an Exact Science
Quantitative Methods in the Study of History
A BlacK Day in Aviation
Four Aviators Killed in France and America
Electrolytic Copper Free from Arsenic
The Laboratory and Commercial Production of Oxyǵen
A Review of the Principal Methods Proposed
