material of construction, under seal, and a sealed letter, ON A FOURTH STATE OF MATTER.— «. 230,943 Steam engine, W. J. Innis giving address of the author, the name of the party the Frictional] and Air Resistances of an Unloaded Steam offering the design not to appear on the drawings or to Engine…
Internet Archive · Public domain (published before 1931). Free to use for anything.