VOLTAIC ACTION OF PHOSPHORUS, ETC. 291 



On the 3rd of December the carbonic acid gas in both 

 batteries had been absorbed, and the liquid had reached the 

 extremities of both tubes. 



In the oxygen tube of 



No. i, rise of liquid = O75 cubic inch. 



In No. 2, o - O5 cubic inch. 



Phosphorus weighed 5*6 grains; the proportional weight 

 was therefore 0*3 grain phosphorus to 0*7 cubic inch oxygen. 



Here again the proportions came out just as in (33) and 

 (34), the intensity of action being intermediate, less than the 

 former and greater than the latter. 



(36.) Charged December 18, 1844. 



No. i. Phosphorus in pure oxygen associated with oxygen, 

 great care being taken to exclude atmospheric air : this ar- 

 rangement having been kept in closed circuit for twenty-four 

 hours, gave a very feeble deflection of the galvanometer. 



Examined February 15, 1845. The rise of liquid in the 

 tube containing phosphorus was equal to 0*3 cubic inch, in that 

 containing the associated oxygen = 0*05. I find no note of the 

 phosphorus being re -weighed ; probably I considered it use- 

 less, as the consumption of oxygen in the associated tube was 

 so very trifling, scarcely sufficient to be distinguished from the 

 effect of its solubility. 



(37.) Charged April 23, 1845. 



No. r. Phosphorus suspended in deutoxide of nitrogen as- 

 sociated with oxygen ; weight of phosphorus =4*3 grains. 



No. 2. Same, without phosphorus. 



Examined May 27, 1845. Galvanometer gave 25 per- 

 manent deflection in No. i, and 10 in No. 2. 



No. i. Rise of liquid in deutoxide tube = 07 cubic inch. 

 Rise of liquid in oxygen tube = O'6 cubic inch. 



No. 2. Rise of liquid in deutoxide tube = 07 cubic inch. 

 In oxygen tube = 0*2 cubic inch. 



Weight of phosphorus 4*17 grains. 

 Consequently had lost 0*13 grain for 0*4 cubic inch of oxygen. 



In this and all the preceding experiments the residual 

 gases were unchanged in quality, and in this experiment it 

 appears that the action of the deutoxide of nitrogen and the 

 oxygen was perfectly unaffected by the phosphorus, the con- 



u 2 



