108 Proceedings of Royal Soeiety of Edinhurgh. [sess. 
A comparison of its composition with the globulins derived from 
plants, which have been so carefully studied by Chittenden and 
Hartwell, by Griibler, Ritthausen, and Barbieri, shows a smaller 
amount of nitrogen and a larger amount of sulphur in the globulin 
than occurs in vegetable globulins. (See Journal of Physiology, 
1890, p. 440.) 
A comparison of the composition of this pure crystalline ash-free 
globulin, with Hofmeister’s analysis of crystalline ash-free albumin 
{Zeitscli. /. 'pliys. Chein., Bd. xvi. p. 189), is shown in the subjoined 
table : — 
Albumin. 
Globulin. 
C, 
53*28 
51 *89 
H, 
7*26 
6*88 
N, 
15*00 
16*06 
S, 
1*09 
1*24 
0, • 
(23*37) 
(23*93) 
The globulin is thus poorer in carbon, but richer in nitrogen and 
sulphur. 
When compared with Harnack’s amorphous ash-free albumin 
{Per. d. deutsclie diem. Gesell., Bd. xxiii. pp. 40-43), the difference 
in the amount of sulphur is rather in the opposite direction, Har- 
nack finding a mean of 1’91 per cent. S as the result of his 
analysis. 
Myosin, according to Kiihne and Chittenden {Zeitsch. f. Biol., 
Bd. XXV. p. 358), has the following composition : — 
c , 
52*79 
H, 
7*12 
N, 
16*86 
s , 
1*26 
0, 
22*97 
Fibrin agrees fairly closely in composition 
marsten Pflilger's Ardi., Bd. xxii. p. 484) : — 
with myosin (Ham- 
c , 
52-68 
H, 
6*83 
N, 
16*91 
S, 
1*1 
0, 
22*48 
