38  C.G. Wheeler on a Process of Elementary Analysis. 
A quantity of hydrogen is introduced, the mixture exploded, and, 
from the thereby resulting contraction in volume, the volume 
of oxygen present is calculat This deducted from the volume 
of the mixture of oxygen = nitrogen gives that of the latter. 
The Swisese neigh the volume of mixed gases introduced into 
the e that originally contained in the gasometer 
ex presse also shad of the nitrogen in each apparatus, which total 
volume thus found is reduced to milligrams and calculated as 
percentage of nitrogen in the bichon under analysis. Should 
for any cause a repetition of the gas analysis be desirable, a fresh 
portion is transferred from the gasometer, care being taken that, 
if the tube cg has in the interval been in communication with 
the air, the first portion of gas be rejected. Ordinarily, not more 
than one-fifth or aoe of the gas contained in the gasometer 
is taken for analys 
_ [herewith sebmit the results of a number of analyses made 
for the purpose of testing the process. 
1, Urea, C,H,N,O,. 2. Nitrate of urea, C,H,N,O,, HO, 
T NO,. 
heory. Found. 
Cs = 2000 9°84 Theor 
y. Found 
H,= 66 701 C; = 97156 9°455 
Ny = 46°67 46°40 H, = 4065 4342 
Oz = 26°66 26°66 Ny = 84:146 33-980 
a —— ==.52:032 Ke 
100-00 9991 O; 52°08 52-032 
100-000 99°809 
re sta “s ammonia, NH,0O. 
eory. Found, C,H se + Rite C, HN. ae: 
C » = SGT 35°42 ‘ound. 
H. = 235 2-49 Cro 243d 32°265 
GO, = 26-58 5S Ny, = 87338 87°330 
o, = 
jonas =00-04 25 94 25945 
100-000 99-745 
5. tg acid, Gane eH. 6. Hippurate of ammonia, NH,O, 
Theory 
H,NO 4 
Saad 6034. ebee wt heor Aletta 1CrgHgNO, 
Looe oe cos 5071 Cac= BTS 57-509 
= 7 7949 Hj.= 56 6017 
Og == 26°82 26-820 Nz = 112 10-984 
100-00 99833 Mea S05 weit 
100°0 100110 
7. Morphine, » CaaHlgNOg. 8. Narcotine, Cool we cas 
‘ound. Theory. nd. 
aon 6-6 6591 H,.= 5°85 5°334 
N S011 Ss se) S51 3101. 
Oo, = 1686 16860 O,4= 26°23 26-230 
100:00 100°204 100-00 99°648 
