M. R. Buuseu's Blowpipe Experiments. 



513 



HO + 0, and that the latter conipound also acts an important 

 part in these slow oxidations. I am inclined to suspect that the 

 chemical polarization of is deeply concerned in animal respi- 

 ration and many other chemical actions going on in nature ; but 

 I will not yet talk about these matters. 



Your most attached Friend, 

 Basle, October 26, 1859. C. F. ScHONBElN. 



LXXVII. Bloivpipe Experiments. Bij R. Bunsen*. 



THE lamp invented by Bimsen, in which gas is burned with- 

 out luminous or fuliginous flame, can be used to produce 

 all the reactions for which the blowpipe is usually employed, and 

 with greater ease and certainty. In many cases reactions can be 

 obtained, 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-plate 

 chimney, 30 millims. wide at the top and 55 millims. at the 

 bottom, is so fixed on the supports a a a, that the tube of the 



ri2. 1. Fig. 2. 



burner h is in the axis of the chimney, and terminates 45 millims. 

 below the upper aperture. By this arrangement tiie flame has 

 • Slightly abriilgcd tVom Licliig's .hinalen, Scj)!. I »'>V, h\ Dr. E. .\t!;iiisou. 

 r/iil. Mu'ij. S. 4. No. \%',. Suppl. \'ol. 18. ■ 'Z h 



