tue of Lavoisier-cum-Condorcet o remain in place for anotury until t aken aed down for scrap.

    In trous oxide, or lauger it  its use “tended by a  ury it y, ime devoted to little else. ters put on “laugeers could refres inion and tertain taggerings.

    It  until 1846 t anyone got around to finding a practical use for nitrous oxide, asan anestic. Goodness kno of t obvious practicalapplication.

    I mention to make t t cry, eentury, rat its bearings in t decades of teentgeology ietly it o do ations ofequipment—tance, no centrifuges until tury,severely restricting many kinds of experiments—and partly it as gentlemen, o be drao geology, natural ory, and physics.

    (tly less true in continental Europe tain, but only slig isperelling t one of t important observations of tury, Broion,ure of molecules,  by a c but by a Scottisanist, Robert Broiced, in 1827,  tiny grains of pollensuspended in er remained indefinitely in motion no matter osettle. tual motion—namely tions of invisible molecules—ery.)t  not been for a splendidly improbable cer namedCount von Rumford, itle, began life in oburn,Massacts, in 1753 as plain Benjamin tious,“ure and figure,” occasionally courageous and exceedingly briguntroubled by anyt nineteen een years  at tbreak of revolution in ts, for a time spying on teful year of 1776, facing arrest“for lukey,” ai-Royalists armed s of  tar, bags of feat desire to adorn h.

    to England and to Germany, o t of Bavaria, so impressing ties t in 1791 v