Was the earliest possible date, (2) the description in Hero's Mechanics iii.
Lodge's Mechanics: A solid has both size and shape.
- Smoke-box, American Railway Master Mechanics' Association.
In mathematics, he was the first to draw up a methodical treatment of mechanics with the aid of geometry; he first distinguished harmonic progression from arithmetical and geometrical progressions.
Among his articles may be mentioned those which he wrote for the ninth edition of this Encyclopaedia on Light, Mechanics, Quaternions, Radiation and Thermodynamics, besides the biographical notices of Hamilton and Clerk Maxwell.