AVOGADRO, Amadeo (1776-1856). Fisica de'corpi ponderabili ossia trattato della costituzione generale de'corpi del cavaliere . Turin: Stamperia reale, 1837-41. 4 volumes, 8 o (238 x 161 mm). Uncut and largely unopened. 18 folding engraved plates. (Volume II broken). Original pink [Volume I], gray [Volume II] and blue [Volumes III-IV] printed wrappers (upper wrapper of Volume II replaced (from another copy?). Provenance : Sig. Cav. Lavy (presentation inscriptions on Volumes III & IV). FIRST EDITION, THE FIRST ANNOUNCEMENT OF "AVOGADRO'S NUMBER". A major treatise containing Avogadro's famous hypothesis that the number of integral molecules in any gas is always the same for equal volumes, or always proportional to the volumes. This was of great importance for 19th century chemistry in effectively distinguishing between atoms and molecules. Avogadro first published this hypothesis in 1811, but it was largely ignored for another half century, partly because it was published first in Italian (when Italy was at the periphery of scientific research) and subsequently only in minor French, German and English scientific journals. Norman 89. (4)
AVOGADRO, Amadeo (1776-1856). Fisica de'corpi ponderabili ossia trattato della costituzione generale de'corpi del cavaliere . Turin: Stamperia reale, 1837-41. 4 volumes, 8 o (238 x 161 mm). Uncut and largely unopened. 18 folding engraved plates. (Volume II broken). Original pink [Volume I], gray [Volume II] and blue [Volumes III-IV] printed wrappers (upper wrapper of Volume II replaced (from another copy?). Provenance : Sig. Cav. Lavy (presentation inscriptions on Volumes III & IV). FIRST EDITION, THE FIRST ANNOUNCEMENT OF "AVOGADRO'S NUMBER". A major treatise containing Avogadro's famous hypothesis that the number of integral molecules in any gas is always the same for equal volumes, or always proportional to the volumes. This was of great importance for 19th century chemistry in effectively distinguishing between atoms and molecules. Avogadro first published this hypothesis in 1811, but it was largely ignored for another half century, partly because it was published first in Italian (when Italy was at the periphery of scientific research) and subsequently only in minor French, German and English scientific journals. Norman 89. (4)
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