On the Bases ( Organic) in the Juice of Flesh. 

 Methods for Isolation of Kreatinin from Urine. 



291 



The following is a brief summary of the advantages possessed by 

 the mercuric chloride method, which render it peculiarly applicable 

 to the case of such an easily changed substance as fresh muscle : 



1. The germicidal action of mercuric chloride is so powerful that, 



if added in sufficient quantity, bacterial action is rendered 

 impossible. 



2. It removes from solution at once the more putrescible consti- 



tuents of the liquid (albuminoid matters). 



3. It precipitates kreatinin gradually, so as to allow of separation 



of that base as mercury salt, and of subsequent isolation of the 

 base itself, without any application of heat. 



4. By removing from solution the putrescible substances, it favours 



the isolation of any bases, &c., which it does not precipitate, 

 inasmuch as these substances are protected by it from any 

 danger of alteration by bacterial action. 



Having thus indicated my reasons for adopting the mercuric 



