COMBUSTION OF AMMONIA IN CHLORINE. 73 



instances that occur where similar deficiencies are perceptible, 

 and which are to be chiefly attributed to the hitherto unnoticed 

 transition of matter from a fixed to a radiant state. He de- 

 scribes that on making a mixture of 8 cubic inches of ammonia, 

 and 3 cubic inches of chlorine, 3.3675 wt. grains of sal- 

 ammoniac in a solid form will be obtained, and that 1 cubic 

 inch of azotic gas will remain in a gaseous state ; and that the 

 gaseous product of such a decomposition amounts to 1-1 1th 

 of the original bulk of the gaseous mixture. Now 



The weight of 100 cubic inches of chlorine is 76.250 grains, therefore the 

 weight of 3 cubic inches is 2.28750 grains. 



The weight of 100 cubic inches of ammonia is 18,000, 



therefore 8 cubic inches weigh 1 . 44000 



Total 3.72750 



The weight of salammoniac obtained .... 3.36750 



Weight of 1 cubic inch of azotic gas 29951 



Deficiency .... 06348 



81 li 



3.72750 



I 



which is equal to 1.522 in volume, and 0.57709 of a grain 

 in weight on the 100 cubic inches, or H per cent, in volume, 

 and a little more than half a grain in weight in 34.6995 

 grains, the weight of 100 cubic inches of such a mixture, or 

 nearly 1^ per cent, in weight on 100 grains. 



Hitherto the attention of the eminent chemists, in their expe- 

 riments on the gases, has been principally directed to their 

 obtaining a residuum, or product equal to the amount of the 

 gases on which their operations may have been performed, and 

 they have considered that the nearer the product arrived at 

 the quantity sufficient, to account for the whole consumption 

 of the gases employed, the more they approached the deside- 

 ratum of perfect accuracy in the result. Thus it has been 

 laboured to prove, that an equal quantity of carbonic acid gas 

 has been obtained with a given portion of oxygen, from the 



