The Philosophical magazine; a journal of theoretical, experimental and applied physics . ound also acts an inijiortantpart in these slow oxidations. I am inclined to suspect that thechemical polarization of 0 is deeply concerned in animal rcs])i-ration and many other chemical actions going on in nature; butI will not yet talk about these matters. Your most attached Friend,Basle, October 26, 1859. C. P. ScHONBElN. LXXVII. Blowpipe Experiments. By R. Bunsen*. THE lamp invented by Bunsen, in which gas is burned with-out luminous or fuliginous flame, can be used to produceall the reactions for whi
The Philosophical magazine; a journal of theoretical, experimental and applied physics . ound also acts an inijiortantpart in these slow oxidations. I am inclined to suspect that thechemical polarization of 0 is deeply concerned in animal rcs])i-ration and many other chemical actions going on in nature; butI will not yet talk about these matters. Your most attached Friend,Basle, October 26, 1859. C. P. ScHONBElN. LXXVII. Blowpipe Experiments. By R. Bunsen*. THE lamp invented by Bunsen, in which gas is burned with-out luminous or fuliginous flame, can be used to produceall the reactions for which the blowpipe is usually em])loyed, andwith greater ease and certainty. In many cases reactions can bfobtained, and even the approximate quantity of substances deter-mined, which with the ordinary blowpipe are either impossible,or can only be effected by difficult and tedious processes. Fig. 1 represents the blowpipe lamp. A conical iron-platechimney, 30 millims. wide at the top and 55 aiillinis. at thebottom, is so fixed on the supports a a a, that the tube of the Fi-. 1. Fio;. burner li is in the axis of the chinuiey, and terminates 15 the upper aperture. By this arrangement the flame ha>>* Sliijhtlv abridged from Liel)ius .1/;««/<-h, Sej)t. It^o!*. bv Mit(j. S. No. 123. Suppl. \\A. 18. :2 L 514 ]U. R. Bunsens Bloropipe Experhnents. the form represented in vertical section, fig. 2 : ab a correspondsto the dark part of the ordinary luminous flame, and containsthe unburned gas mixed with air. By arranging the supply ofgas so that the point b is exactly level with the upper aperture,a flame is obtained of unvarying dimensions, which does notflicker, and may at all times be obtained, a d ab is the burningcone of the flame, and is so little luminous as to be scarcely per-ceptible. In this cone the external mantle a dac may be di-stinguished from the internal mantle a c ab, by being of a moreintense blue. The holder (fig. 3)
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