68 Dr Prout’s Experiments on the Changes which take place 
ascertained. In this manner every thing was determined, ex- 
cept the proportion of alkaline matter present ; and to ascertain 
this, other experiments with different yolks were made, in which 
lime and nitrate of lime were substituted for the bicarbonate 
and nitrate of potash. 
Berzelius has remarked, that the sulphuric acid obtained 
from albumen is probably a product of combustion, and exists 
in it naturally as sulphur. The same also appears to be the 
case with the phosphoric acid, especially that obtained from the 
yolk. The chlorine seems to exist originally in union with 
sodium, forming common salt. As to the earthy principles, 
Berzelius is of opinion that their metallic bases are probably to 
be considered as constituent principles of the primary animal 
compounds. These circumstances have induced me to state the 
quantities of the acids obtained separately from the bases. 
The relative proportions of the saline principles of different 
eggs vary in some instances considerably. The three following 
are selected from a variety of other analyses as examples ; the 
weight of each egg being reduced, for the sake of comparison, 
to 1000 grains. 
No. I, 
No. 
II. 
o 
Is 
2 2 
o ^ 
A o 
Ph 
1 
2 
u 
Potash,! 
Soda, &i 
Carb. of 
ditto. 
Lime, 
Magne. 
&Carb. 
of do. 
o 
'u 
7S T3 
% ’3 
% < 
02 
i 2 
-G O 
a! 
.5 
S 
2 
u 
Potash, 
Soda, & 
Carb. of 
ditto. 
Lime, 
Magne. 
&Carb. 
of do. 
Albumen, 
Yolk, - 
Gr. 
.29 
.21 
Gr. 
.45 
356 
Gr. 
.94 
.39 
Gr. 
2.92 
.50 
Gr. 
.30 
.68 
Albumen, 
Yolk, - 
Gr. 
.15 
.06 
Gr. 
.46 
3.50 
Gr. 
.93 
.28 
Gr. 
2.93 
.27 
Gr. 
.25. 
.61 
Total, - 
.50 
4.01 
1.33 
3.42 
.98 
Total, - 
.21 
3.96 
1.21 
3.20 
.86 
! No. III. 
Sulphuric 
Acid. 
Phospho- 
ric Acid. 
o3 
c 
| 
2 
u 
Potash, 
Soda, & 
Carb. of 
ditto. 
Lime, 
Magne. 
& Carb. 
of do. 
Albumen, 
Yolk, - 
Total, - 
Gr. 
.18 
.19 
Gr. 
.48 
4.00 
Gr. 
.87 
.44 
Gr. 
2.72 
.51 
Gr. 
.32 
.67 
.37 
4.48 
1.31 
3.23 
.99 
