63 “A Work That Laid The Basis Of Modern Hydrodynamics” 90BERNOULLI, Daniel. Hydrodynamica. Strasbourg, 1738. Quarto, contemporary full calf sympathetically rebacked. $11,000 First edition of Bernoulli’s most important work, the source of Bernoulli’s principle, a fundamental concept in fluid dynamics, with engraved title vignette and 12 engraved folding plates. Bernoulli’s “reputation was established in 1738 with Hydrodynamica, in which he considered the properties of basic importance in fluid flow, particularly pressure, density, and velocity, and set forth their fundamental relationship. He put forward what is called Bernoulli’s principle, which states that the pressure in a fluid decreases as its velocity increases. He also established the basis for the kinetic theory of gases and heat by demonstrating that the impact of molecules on a surface would explain pressure and that, assuming the constant, random motion of molecules, pressure and motion increase with temperature” (Britannica). Title page expertly cleaned, with only remnants of owner signature on title page surviving, otherwise interiors with only occasional light spotting and embrowning. An excellent copy. “The Most Important Biological Discovery Of The 20th Century” 91WATSON, James and CRICK, Francis. “A Structure for Deoxyribose Nucleic Acid.” with three other papers. In: Nature, Volume 171. London, 1953. Octavo, contemporary half black cloth. $8500 Volume 171 of Nature, including the first appearances of the articles announcing the most important biological discovery of the 20th century, including the first illustration of the double-helix structure of DNA. This volume of the journal Nature contains the most important biological discovery of the 20th century: the key to the deciphering of the genetic code. “It has not escaped our notice,” write Watson and Crick near the end of the first paper, “that the specific pairing we have postulated immediately suggests a possible copying mechanism for the genetic material.” Neither did it escape the notice of the Nobel Prize committee. In 1962 Crick, Watson and Wilkins received the Nobel Prize “for their discoveries concerning the molecular structure of nuclear acids and its significance for information transfer in living material” (Garrison & Morton 256.3; 256.4). Minor rubbing to board edges. A nearly fine copy of a landmark work in science.
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