214 Professor How on the Ethers and 



strong hydrochloric acid was added, and the heat kept up for 

 some minutes ; this process furnished the acid whose analysis 

 (in.) clearly shows it to remain quite unaltered. 



Since the publication of the paper, I have again taken 

 some of the yellow salt, and boiled its aqueous solution till no 

 trace of ammonia was perceptible, and its colour was quite 

 discharged ; muriatic acid added to it while still hot threw 

 down a substance furnishing these results : — 



( 4-602 grains, dried at 212°, gave 

 ) 6*770 „ carbonic acid, and 

 I 1-310 „ water; 



leading to a percentage of 



Carbon, 40-12 

 Hydrogen, 3*16 



agreeing perfectly with the former numbers and those re- 

 quired by the calculation. The mean of all these analyses is 

 collated anew with the two formulae, and their values : — 



Mean Expt. H. H. W. and 0. 



Carbon, 39-75 39-84 C 84 504 4?21 C 14 si 



Hydrogen, 3-26 3-08 H 39 39 2-51 H 5 5 



Oxygen, 49-13 49-34 78 624 48-25 12 96 



Nitrogen, 7'86 7*74 N 7 98 7*08 N 14 



100-00 100-00 1265 100-00 199 



The empirical formula I assign to the meconamidic acid being 



C 84 H 39 78 N 7 *> 



and that of the proposed normal amido-meconic acid, 



C 14 H 5 12 N. 



With regard to the basicity of my compound, I stated before 

 that I had only one salt from which to draw conclusions, and 

 I must now mention a fact which induces me to assign to it 

 another as its normal saturating power. In the description 

 of the yellow salt already so often adverted to, I showed that 

 it loses ammonia both in boiling water and when dry, at 212° 

 Fahr. And I now find that its aqueous solution evaporated 



