954 C. J. MARTIN AND J. McGARVIE SMITH. 
The filtrate was dialysed for twenty-four hours in running water 
and two days in distilled water, and then concentrated by dialysis 
against absolute alcohol. We thus obtained a few c.c. of fluid, 
containing a small quantity of proteid in solution. 
The proteids which alone could be present in this solution after 
the above manipulations are, proto-albumose (traces), deutero- 
albumose and peptone. The last we have previously shown is 
not present in the venom. 
Neumeister has shown that it is impossible by saturation with 
meutral salts, to absolutely precipitate all proto-aloumose from 
solution,* and as the filtrate became cloudy on the addition of a 
few drops of 57% Cu SO,, some proto-albumose was present in the 
filtrate. Whether deutero-albumoss was also present we were 
unable to determine, as we are not acquainted with any method 
by means of which traces of this proteid may be determined in the 
presence of proto-albumose. 
The contents of the filter (z.e. the precipitate thrown down by 
saturation with Mg SO,) were all washed through by means of 
distilled water, and the solution freed from Mg SO, by dialysis 
as in the previous case. 
At the end of three days there was a considerable precipitate 
on the dialyser. The contents of the dialyser were emptied into 
a test-tube and centrifugalised. In afew minutes the precipitate 
was deposited at the bottom of the tube. 
The supernatant fluid was pipetted off and concentrated by 
dialysis against absolute alcohol and evaporated to dryness at a 
gentle heat (40° C.). The precipitate was thoroughly washed with 
a large volume of distilled water, by means of the centrifuge, and 
then dried over chloride of calcium. 
In this way we obtained two albumoses, both precipitable by 
saturation with MgSO, and therefore belonging to the class of 
primary albuinoses, one of which was soluble in distilled water, 
the other insoluble, but readily soluble in dilute solutions of 
* Neumeister, Zeitschrift f. Biologie, Bd. xx111. 
