TY - JOUR T1 - An Account of an Instrument or Machine for Changing the Air of the Room of Sick People in a Little Time, by Either Drawing out the Foul Air, or Forcing in Fresh Air; or Doing Both Successively, without Opening Doors or Windows JF - Philosophical Transactions (1683-1775) VL - 39 SP - 41 EP - 43 PY - 1753/01/01/ UR - http://dx.doi.org/10.1098/rstl.1735.0009 M3 - doi:10.1098/rstl.1735.0009 AU - Desaguliers, J. ER -