(628.) 



Quantitij of oxijgen in cM.' (0° — 760 niM.) obtained from the 

 action of J cJ/.' blood on a solution of H, 0, of I'/o- 



Man 710 



Monkey 706 



Horse (venous) 288 



Horse (arterical) 438 



Ox 136 



Goat 58 



Pigeon 4 

 Utrecht, December 1905. 



Physiology. — "On the diferentiation of fluids of the body, 

 containing proteid." By L. van Itallie. (Communicated by 

 Prof. C. A. Pekelharing). 



(Communicated in the meeting of December 30, 1905). 



For the research of blood, sperm and other fluids of the body, 

 containing proteid, the phenomenon, that even traces of these sub- 

 stances are able to decompose hydrogenperoxide, has been used for 

 a long time already'. If a drop of a hydrogenperoxide-solution is 

 put on an object on which blood or sperm was dried up, develop- 

 ment of gas is observed, even by the presence of traces of blood or 

 sperm which' give rise to the forming of froth, when blood is 

 present. As the experiment can already be taken with some fibres, 

 and the splitting off of oxygen can be traced under the microscope, 

 it has often rendered me good services in examining on behalf of 

 the court of justice, at the preliminary-examinations. If then no oxygen 

 is liberated and the object on which dubious stains occur, has not 

 been exposed to a temperature higher than 65°, it may be concluded 

 from the fact that no reaction occurs, that blood and sperm were 

 absent. 



It was obvious to try to render the result of the experiments 

 communicated in the preceding paper, serviceable to the distinguishing 

 of the blood of men, resp. monkeys, from the blood of other species 

 of animals. Not every one is in the possession of the serum of 

 Uhlenhut or of the sera recommended by Neisser and Sachs (Berl. 

 klin. Wochenschr. 1905, number 44) for the anti-complementary 

 influence, while it may be moreover of great value to the court of 



