. American journal of pharmacy . eat that a partof the gas liquefies in and is thrown out in a liquid jet from theorifice if the apparatus be inclined. The same retort, tube and condenser are shown in Fig. 2, in whichthe entrance of the liquid carbon dioxide is shown at a, and the exit ofthe vapors withdrawn by the suction pump at b. Instead of the orificein the tubulure of the retort the condenser is closed with a screw valve,Ey which connects with a manometer, graduated to 800 atmospheres. Am. Jour. Pharra. )April, 1878. J Liquefaction of Gases. Since isomorphic bodies have the same atomic v
. American journal of pharmacy . eat that a partof the gas liquefies in and is thrown out in a liquid jet from theorifice if the apparatus be inclined. The same retort, tube and condenser are shown in Fig. 2, in whichthe entrance of the liquid carbon dioxide is shown at a, and the exit ofthe vapors withdrawn by the suction pump at b. Instead of the orificein the tubulure of the retort the condenser is closed with a screw valve,Ey which connects with a manometer, graduated to 800 atmospheres. Am. Jour. Pharra. )April, 1878. J Liquefaction of Gases. Since isomorphic bodies have the same atomic volume, equivalentdivided by density, and oxygen belongs to the group of sulphur, theatomic volume of which is ?22—ID> according to Dumas the density ofsolid, and probably also of liquid oxygen, should be J J=i. Pictet hasverified this by determining that a tube of 46*25 cc. capacity held45*467 grams of liquid oxygen, the slight difference of *8 gram beingprobably due to incomplete filling or slight variation in Cailletets Apparatus.—The hollow steel cylinder A is fastenedto an iron frame by the straps i?, and when filled with water throughthe cup G, a very high pressure may be produced in any vessel withwhich it may be connected, upon turning the large hand-wheel M, thehub of which, revolving in the journal-box jP, forms a nut, by whichthe square-threaded screw of a steel plunger is worked. The flow ofwater is controlled by a screw plug operated by the small hand-wheelO, whereby also the pressure exerted upon gases may be suddenlyrelieved. The water is forced through a small metal tube into thehollow cylinder which is supported by the tablet />, and capable ofwithstanding a pressure of 900 to 1,000 atmospheres, measured by the i88 Liquefaction of Gases. f Am. Jour. Pharm.( April, 1878. gauges N and N. a contains the mercury reservoir, into which isplunged the glass tube filled with gas. This part of the arrangementis shown in Fig. 4, which is half size.
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Keywords: ., bookcentury1800, bookdecade183, booksubjectpharmacy, bookyear1835
