329 



With this tlie antiserum and serum were always both inactive, so 

 that we have nothing to do with any possible anaphylatoxin. 



If one again injects the mixture in which a precipitate has been 

 formed subconjunctively, one will find a rather strong swelling the 

 next few days, which at a morphological examination again seems 

 to contain polynucleous cells. The controlling animals which had 

 only been injected with serum, were normal again the next day. 



If one centrifuges the mixture, the above mentioned liquid is not 

 found to cause a swelling, but the precipitate is. So we have here 

 an analogous conduct as with the corpuscles ^). 



I have now tried whether specific albumen precipitations did not 

 show the same conduct, and for this I chose the precipitates of 

 horseserum with colloidal Fe {OH)^ and SiO^. Both precipitates 

 gave some swelling and at a morphological investigation polynucleous 

 leucocytosis. This investigation must still be extended. 



If one injects a prepared animal with specific serum, one gets 

 the same phenomenon : sw^elling and leucocytosis. This phenomenon 

 is wellknown. I did not yet succeed in proving here as well that 

 the precipitins hold the serum in its place''), although 1 do think it 

 likely, considering what goes before. For the time being I do not 

 see a chance of preparing a serum which possesses amboceptor 

 against foreign albumen, but no precipitin. 



Amsterdam. Path. Anat. Laboratory of tJie Univefrsity. 



Chemistry. — "77^6' Temperature-coefjicients of the free Surface- 

 energy of Liquids at Temperatures from — 80° to 1650° C. 

 1. Methods and Apparatus. By Prof. Dr. F. M. Jaeger. (Com- 

 municated by Prof. P. VAN Romburgh). 



^ 1. The purpose of the experiments here described was to en- 

 deavour to ascertain the relation between the so-called "molecular 

 surface-energy" of molten salts and the temperature, — a relation 

 which has hithertho been studied only in liquids, which possess no 

 electrolytical conductivity. 



1) The experiments are somewhat analogous to those about the local efi'ect of 

 the anaphylatoxin (Friedberger), but I always used serum that was made inactive, 

 contrary to the investigators, into the anaphylatoxin. 



2) That is to say subconjunctively. For the cornea other laws probably prevail; 

 there the serum remains in the same place for rather a long time without there 

 being any precipitins (Wessely, von §zily). 



