0 o 0 body. On this plan several have been made by Mr- ted by the steam within, which is thus condensed. o 0 o 0 o 0 o Pirrson, of New York, as represented by Fig. 18. Many of these condensers are in use in London pro- a This is a mechanical mixture. But if the mixture Pig. 18. ducing good results,… … thick to cause any practical inconvenience. other portion forms tolual, in which 14 atoms of car- The tubes through which the steam passes are fixed I also observed that on one set of tubes which had, into these copper tube plates, and water allowed to bon combine with 8 atoms of hydrogen, C u H8.…