Passages from the Life of a Philosopher

Glaciers -- Uniform Postage -- Weight of the Bristol Bags -- Parcel Post -- Plan for transmitting Letters along Aërial Wires -- Cost of Verification is part of Price -- Sir Rowland Hill -- Submarine Navigation -- Difference Engine -- Analytical Engine -- Cause of Magnetic and Electric Rotations -- Mechanical Notation -- Occulting Lights -- Semi-occultation may determine Distances -- Distinction of Lighthouses numerically -- Application from the United States -- Proposed Voyage -- Loss of the Ship and Mr. Reid -- Congress of Naval Officers at Brussels in 1853 -- My Portable Occulting Light exhibited -- Night Signals -- Sun Signals -- Solar Occulting Lights -- Afterwards used at Sebastopol -- Numerical Signals applicable to all Dictionaries -- Zenith Light Signals -- Telegraph for Ships on Shore -- Greenwich Time Signals -- Theory of Isothermal Surfaces to account for the Geological Facts of the successive Uprising and Depression of various parts of the Earth's Surface -- Games of Skill -- Tit-tat-to -- Exhibitions -- Problem of the Three Magnetic Bodies.

Of Glaciers