拍品 1119
1119
HELMHOLTZ, Hermann von (1821-1893). Die Mechanik der Gehrknchelchen und des Trommelfells. Bonn: Max Cohen & Sohn, 1869. Offprint from Pflger's Archiv fr Physiologie, vol. 1. 8o. Unopened in original yellow printed wrappers (front wrapper separating at spine, back wrapper soiled and creased). FIRST EDITION, offprint issue. The second of two studies in which Helmholtz "evaluated the efficiency and linearity of the ossicular chain as a transformer" (DSB). Garrison-Morton 1572; Waller 4297; Norman 1047. -- "Ueber die Theorie der zusammengesetzten Farben," in Archiv fr Anatomie, Physiologie und wissenschaftliche Medicin, Jahrgang 1852, pp. 461-482. Berlin: Verlag von Veit et Comp., 1852. 8o. 16 folding engraved plates. Largely unopened in original plain paper wrappers. FIRST EDITION, journal issue. "Helmholtz was the first to challenge the centuries-old assumption that mixed colors of light behave in the same fashion as mixtures of pigments" (Norman). Garrison-Morton 1508; Norman 1042. -- Ueber die Theorie der zusammengesetzten Farben. Physiologisch-optische Abhandlung. Berlin: Gebruder Unger, 1852. Disbound. FIRST EDITION, thesis issue. Helmholtz's Habilitationsschrift. The same typesetting as the journal issue. Garrison-Morton 1508; Norman 1043. -- "Ueber die Wrmeentwickelung bei der Muskelaction," in Archiv fr Anatomie, Physiologie und wissenschaftliche Medicin, Jahrgang 1848, pp. 144-164. Berlin: Verlag von Veit et Comp., 1848. 8o. 20 folding engraved plates. Largely unopened in original plain gray paper wrappers. FIRST EDITION, journal issue. Helmholtz demonstrated that muscular action is the principal source of animal heat. Norman 1040. (4)

細節
HELMHOLTZ, Hermann von (1821-1893). Die Mechanik der Gehrknchelchen und des Trommelfells. Bonn: Max Cohen & Sohn, 1869. Offprint from Pflger's Archiv fr Physiologie, vol. 1. 8o. Unopened in original yellow printed wrappers (front wrapper separating at spine, back wrapper soiled and creased). FIRST EDITION, offprint issue. The second of two studies in which Helmholtz "evaluated the efficiency and linearity of the ossicular chain as a transformer" (DSB). Garrison-Morton 1572; Waller 4297; Norman 1047. -- "Ueber die Theorie der zusammengesetzten Farben," in Archiv fr Anatomie, Physiologie und wissenschaftliche Medicin, Jahrgang 1852, pp. 461-482. Berlin: Verlag von Veit et Comp., 1852. 8o. 16 folding engraved plates. Largely unopened in original plain paper wrappers. FIRST EDITION, journal issue. "Helmholtz was the first to challenge the centuries-old assumption that mixed colors of light behave in the same fashion as mixtures of pigments" (Norman). Garrison-Morton 1508; Norman 1042. -- Ueber die Theorie der zusammengesetzten Farben. Physiologisch-optische Abhandlung. Berlin: Gebruder Unger, 1852. Disbound. FIRST EDITION, thesis issue. Helmholtz's Habilitationsschrift. The same typesetting as the journal issue. Garrison-Morton 1508; Norman 1043. -- "Ueber die Wrmeentwickelung bei der Muskelaction," in Archiv fr Anatomie, Physiologie und wissenschaftliche Medicin, Jahrgang 1848, pp. 144-164. Berlin: Verlag von Veit et Comp., 1848. 8o. 20 folding engraved plates. Largely unopened in original plain gray paper wrappers. FIRST EDITION, journal issue. Helmholtz demonstrated that muscular action is the principal source of animal heat. Norman 1040. (4)