Analysis of the compound inflammable Gases. 289 



The proportion of common air, in the foregoing speci- 

 men of gas, and in all cases when care was taken to ex- 

 clude it, was too small. to deserve being taken into the ac- 

 count, not appearing, by the test of nitrous gas, to exceed 

 1 per cent. 



The following table exhibits the composition of gas from 

 various kinds of coal. In the last column, under the term 

 inflammable gas, is comprehended that portion, which is 

 neither suddenly condensed by cxy-muriatic ac^d ..as, nor 

 absorbed by potash. A name more descriptive cannot be 

 applied to it, because it varies essentially in different cases, 

 and the proportion of its components is still matter of 

 doubt. 



TABLE T. 



i 



! Kind of Coal. 



No. of the 

 product. 



1 



2 



One 



hundrp'' measii-es con 



si.^H f 



Sul.Hydr. 



Carb. acid. 



i tenant. 



liuiu.a. 



Wigan cannel. J. 



5-3 

 0- 



4-4 

 1-8 



49 

 0- 



85 4 



98-2 



■ Wednesburv, \ 

 Staffordshire. } 



1 



4-9 



3-4 







Sl-7 



o 



0- 



2-8 







97-2 



Newcastle on j 

 j Tyne. ( 



1 



29 



2-8 



2-7 



9i-e 



2 



2-2 



17 







9R-1 



I Newcastle, Staf- / 



fordshire. ) 



| I 



1 



2 

 3 



i-4 

 



2-7 •• 

 2 



i-4 





 

 



94-3 

 96-6 

 98-6 



Middle^on, near J 

 Leeds. J 



1 



2 

 3 



3 



1-4 

 



2 



1-7 

 2 



1 





 



94 



ss-9 ; i 



93- 



f 



1 



3'3 



3-2 



2-5 



91 



2 



2 



11 







96-9 



Black Mine, near J 

 Manchester. \ 



3 



2 



1 







97 



4 



0<5 



1-2 







93-3 . 



1 



5 







1-2 







98 8 



I 



e 



° 











100 



r 



1 



1 



1-7 







97-3 



i j 



2 







1-7 







983 



| Merthyr, Glamor- J 

 gamhire. \ 



3 







1-6 







98-4 



4 







1-5 







98 5 



{ 



5 







1 







99 



G 















100 



Native coal tar. 



— 



13 



6 



15 



66 



Caoutchouc. 

 1 



— 







4-9 



17 



78-1 



After separating the sulphureted hydrogen and carbonic 

 acid gases by agitation with liquid, potash, the residue, con- 

 sisting of the inflammable gas mixed with the proportion 



Vol. 32. No. 127- Dec. 1S0S. T . of 



