iad * 
W. Gibbs on the Constitution of Organic Compounds. 21 
C:HO2) al 
C2H inn 2 
N4 on Ghetiags beet CukbOn 0-+HO-+ ZnCl. 
H 
Hippuric acid is consequent also the hydrate of an ammonium 
oxyd, a view W I shall develop more fully in another part 
of this paper. The cuminuric, anisuric and salicuric acids, 
which Cahours* has described, are formed in a similar manner, 
and must therefore have a similar constitution. By the action 
of the chlorids of acetoxy] C1HsO2.Cl, butyroxyl C»H7O2.Cl, 
&c., upon glycosin-zine, similar acids must be produced, while it 
appears to say the least, extremely probable, that the ethyl 
radicals, CsHs, &. may also be made to pe eg an equivalent 
of hydrogen in elycosin, yielding bodies of an analogous acid 
and basic character. Thus by the action of iodid of ethyl upon 
glycosin-silver we should have 
C2HOz 
x {8H oso, 
and it is of course possible that the last equivalent of hydrogen 
may be also replaced by an equivalent of a chlorous or zincous 
radical, as in the case of Hofmann’s tetrammoniums. 
The. products of the decomposition of glycosin strongly sup- 
sai the view that this body contains the radicals formyl and 
coor as above assumed. ‘T'hus when fused with caustic 
h, ammonia and hydrogen are evolved, while the fused 
ia monies cyanid of potassium and oxalate of potash. It is 
however well established that formic acid, Cs “4 Oz, under 
he same circumstances yields oxalic acid, and the facility with 
which formyl, C2H, in contact with nitrogen or ammonia yields 
cyanogen, 1s also familiar to chemists ith oxydizing agents 
glycosin yields carbonic and cyanhydric acids and water. “This 
so is in exact accordance with the theor 
OsHsNOs--NOs = 2N+0:H:0s+-HO. 
If 1 we compare ammonia, NH, with three equivalents of water, 
we find that from the equation : 
NH3=0sHa, 
one equivalent of nitrogen may be considered as Jormally though 
not functionally replacing three equivalents of oxygen. Hen 
* ©. R,, xliv, 567. 
