Consists of thirteen folders in portfolio, the first with introductory matter, and twelve, each with special t.-p. and biographical sketch, enclosing a portrait.
"Published ... with the cooperation of the American journal of physics."
no. 1. Galileo, 1564-1642 -- no. 2. Christiaan Huygens, 1629-1695 -- no. 3. Isaac Newton, 1642-1727 -- No. 4. Andre-Marie Ampere, 1775-1836 -- No. 5. Augustin Fresnel, 1788-1827--No. 6. Michael Faraday, 1791-1867 -- No. 7. James Prescott Joule, 1818-1889 -- No. 8. Rudolf Julius Emmanuel Clausius, 1822-1888 -- No. 9. James Clerk Maxwell, 1831-1879 -- No. 10. Josiah Willard Gibbs, 1839-1903--No. 11. Heinrich Rudolf Hertz, 1857-1894 -- No. 12. Henry Augustus Rowland, 1848-1901