SECTION III. — HISTORY. l6l

Talbot, William Henry Fox.
On the colored rings produced by iodine on silver, with remarks on the History of Photography. Phil. Mag. [3]. Vol. xxii, pp. 94-
97 (1843).
Teixeira Mendes, R.
La philosophic chimique d'apres Auguste Comte, indications generales
sur la th^orie positive des phenomenes de composition et de
decomposition suivies d'une appreciation sommaire de I'etat
actuel de la chimie. Distribution gratuite. Centre Positiviste du
Bresil. Ordre et Progres. Rio de Janeiro, 1887. pp. xx-251, 8vo.
The author cites Adolphe Wurtz as an example of " irrationalite academique,"
accuses Marcellin Berthalot of false reasoning, and endeavors to show
that August Comte anticipated Gerhardt in his views of theoretical
chemistry.
Terquem, a.
La science romaine a I'epoque d'Auguste. Paris, 1885. 111.
Tetzlaff.
Darstellung der atomistischen Hypothese nach den modernen Theorien der Chemie. Programme des Gymnasiums zu Stralsund, Ostern, 1886. Stralsund, 1886. pp. 32, 4to.
Than, C. von.
Das cheraische Laboratorium der koniglichen Universitat in Pest Wien, 1872.
Theophrastus. Us pi XiSoov.
Theophrastus died 285 B.C. ; of his work on minerals many editions and translations have been published : in Latin by De Laet, Leyden, 1647 ; in English by John Hill, London, 1746, 8vo ; in French, Paris, 1754; in German by Baumgartner, Nurnberg, 1770.
Thomson, J.
See Tissandier, Gaston.
Thomson, Thomas.
*History of the Royal Society from its institution to the end of the Eighteenth Century. London, 181 2. pp. viii-552-xci, sm. folio.