Pavements for City Streets

Perpetual Motion.—V

Carnot's Opinion of Perpetual Motion

Selected Formulæ

Should Generating Plant be Mounted on Springs?

Miscellaneous Notes

Electrical Notes

Engineering Notes

Experiences in the Arctic Seas

The “Heavy Weights” Competition of the Automobile Club

The Spread of Land Species by the Agency of Man; With Especial Reference to Insects

The British Association—Address in Anthropology

Restoration of Kansas Mosasaurs

Astronomical Work at Lick Observatory

Mummied Heads

Chemistry and Archæology

The Patent System as a Factor in National Development

Physiological Effects of Mental Work

Patents!