and the Musical Sounds which they yield. 



4i; 



but one of these instances*) either of the known composition, 

 or of the known combinations of the Gases, to correct his experi- 

 mental results. 



Specific Gvavities. 



Names of Gases. 



Hydrogen 



Vapour of Carbon 

 CarburettedHydrogen 

 Ammonical Gas . . . .] 

 Vapour of Phosphorus 

 Phosphuretted Hy-l 



drogen J 



Azote 



Carbonic Oxide . . . . 



defiant Gas 



Bihydroguret of 



Phosphorus . 



} 



1 



6 



8f 

 12 



13 



14 

 14 

 14 



14 



-3.^< 



5 





Atmospheric Air . . 14| 



Deutoxide of Azote . . 15 



Oxygen 16 



Vapour of Sulphur .. 16 



Sulphuretted Hy- \j ,"7 



drogen J 



Muriatic Acid Gas . . 18^ 



Protoxide of Azote . . 22 



Carbonic Acid 22 



Cyanogen 26 



Sulphuretted Acid . . 32 



Fluoboric Acid 34 



Protoxide of Chlorine 35^ 



Chlorine 36 



Chloracarbonic Acid . 50 



Hydriodic Acid Gas . . 63 



Vapour of Iodine .>. . 125 



Intervals of Sounds 

 2 +f +m 



1177-5000 

 386-4291 

 259-5039 

 232-6593 



80-5748 



23 102 



8 33 



22 

 20 



7 



451346 1 4 



12-4740 I 



12-4740 1 



12-4740 I 



12-4740 1 



M- 



a_o 

 9 



'W 







18-0709 

 46-5000 

 46-5000 







73-3011 1 6 



110-6276 2 



1870510 4 



187-0510 4 



260 8614 5 



352-5039 7 



379-3407 7 



394-5510 8 



404-5000 8 



549-5039 11 



651-5304 13 



954-0039 19 



10 

 16 

 16 

 23 

 30 

 33 

 34 

 35 

 47 

 56 

 82 



• Dr. Thomson's experimental result a* to Fliiolwric Acid Gas, was 

 2-3G!M : tlic limits of ptobalile errors in this determination, und the analo- 

 gies of the Table in the Text, seem to mc to point, at 31 times the weij;ht 

 of Hydrogen, or 23()11 , wliich I have assumed; it will be foitunatc, if 

 theoretical deductions from the composition of this Gas, sliould hereafter 

 confirm and establish this. 



in 



