1. 1. J. Willard Gibbs’, Elementary principles in statistical mechanics, a finished work 284 pages long, was written in 1901 and published by Yale University in 1902. It was reprinted by Longmans, Green (New York, 1928). An appraisal, by A. Haas (or, rather, two appraisals, a short and a long one) remain worth reading (in Vol. 2 of A commentary on the writings of J. Willard Gibbs, Yale University Press, 1936). Gibbs’ first writing on the concept to which his name is rightly attached, on phase space, is only one page long. It was published in 1884 (Proc. Amer. Assoc. 33, 57) and is reprinted, as page 16, in Vol. 2 of The scientific papers of Willard Gibbs (Longmans Green, London, 1906).
2. 2. See, e.g., F. P. Bowden and D. Tabor, Friction and lubrication (Wiley, New York, 1956).
3. 3. Il Saggiatore, (Volume VI of Le opere di Galileo Galilei, Firenze, 1896) Section 6: Egei e scritto in lingua matematica. . . .
4. 4. J. F. C. Hessel’s paper was published, originally, in Gehler’s Physikalische Wörterbücher (Leipzig, 1830); it is reprinted in Ostwald’s Klassiker der exakten Naturwissenschaften No. 89 (Leipzig, 1897), see p. 91 ff. The history of crystallography was described by P. Groth in his Entwicklungsgeschichte der mineralogischen Wissenschaften (Berlin, 1926). A modern history, very wide ranging, is J. G. Burke’s Origins of the science of crystals (University of California Press, 1966).
5. 5. R. J. Haüy’s most relevant article is that in the Journ. de Physique 20 (1782), 33. For a complete bibliography, see J. G. Burke, 1. c. p. 190. Actually, Burke expresses doubts (see pp. 83-84) concerning Haüy’s independence from his predecessors, in particular from T. Bergman.