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Papers on Impact, &c.

Letters sent to "Nature," in 1874

Price Sixpence. Contents. Introduction—On Molecular Selective Escape—The Origin of Cosmical Rotation—Temporary Stars—The Origin of Nebulæ—The Age of the Sun's Heat—The Formation of Variable Stars—How Binary Stars become connected—The Origin of the Solar System Of Comets and Meteors—Of the Asteroids—The Origin of the Visible Universe—The Stability of the Cosmos—The Recovery of Radiant Energy—On the Development of Potential Energy.

Presidential Address, 1879.

Price Sixpence. On the Genesis of Worlds and Systems.

Inaugural Address University, 1881.

Price Sixpence. Reform.

The above may be obtained from Messrs. Bickerton Brothers, Stewart Street, Christchurch.

They are of interest in showing the state of the Theory of Impact fourteen years ago.

The following Papers are out of print, but are to be found in the Transactions of the N.Z. Institute for 1878-79-80.

• On Temporary and Variable Stars. July 4th, 1878.
• On Partial Impact, &c. August 1st, 1878.
• On the Visible Universe. February 13th, 1878.
• On the General Problem of Stellar Collision. March 13th, 1879.
• Presidential Address on the Genesis of Worlds and Systems. April 3rd, 1879.
• Causes tending to alter Eccentricity of Planetary Orbits. May 6th, 1880.
• On the Origin of the Solar System, August 5th, 1880
• The Origin of Double Stars. August 5th, 1880.