344 Chittenden and Bolton—Kgg-Albumin and Albumoses. 
The protoalbumose was readily soluble in water and, unlike the 
protoalbumose from fibrin, dissolved to a perfectly clear solution 
with a neutral or very faintly alkaline reaction. The aqueous solu- 
tion was rendered somewhat turbid by the addition of a little acetic 
acid, the turbidity disappearing, however, on the addition of an excess 
of acid. The aqueous solution, strongly acidified with acetic acid, 
was precipitated by the addition of potassium ferrocyanide; the pre- 
cipitate, however, dissolved on heating the mixture, reappearing as - 
the solution became cool. 
An aqueous solution of the albumose, acidified with acetic acid to 
such an extent that the first turbidity was re-dissolved, was not ren- 
dered at all turbid by the addition of a little sodium chloride; the 
addition of more salt, however, gave a very strong turbidity which 
disappeared entirely on warming, reappearing on cooling. As with 
the protoalbumose from fibrin, it is possible to add such a quantity 
of sodium chloride as to induce a very heavy precipitate, yet have it 
wholly disappear on boiling the mixture, separating out again, how- 
ever, as the solution becomes cool. Finally the addition of a larger 
amount of sodium chloride gave a precipitate in the acidified solution, 
which was not at all affected by even boiling. 
An aqueous solution of protoalbumose, when treated drop by drop 
with concentrated nitric acid, was rendered noticeably turbid at the 
point of contact, the turbidity disappearing as the mixture was shaken. 
On adding just the right proportion of nitric acid, a point was reached 
where the solution showed a permanent turbidity, which disappeared 
on the application of a little heat, returning as the solution cooled. 
A slight excess of nitric acid produced even in the cold, a very 
distinct reddish yellow coloration of the fluid, the turbidity disappear- 
ing. By adding crystals of salt to the acid solution, a precipitate 
was again formed, which disappeared on the application of heat, and 
reappeared as the solution cooled. 
By saturating an aqueous solution of protoalbumose with salt, a 
heavy precipitate was formed, but in the filtrate more albumose was 
always found on the addition of a little acetic acid. In fact, each 
time protoalbumose was precipitated by sodium chloride in substance 
there was always a loss; a certain proportion of the substance re- 
maining in the filtrate, precipitable only by the addition of a lit- 
tle acetic acid. Protoalbumose heated with acid, or treated in the 
cold with dilute alkalies was not apparently converted into acid 
albumin or alkali-albuminate-like bodies, for on neutralization, no 
precipitation whatever occurred. Heated with potassium hydroxide 
