Le Prix Niemcewicz destiné à récompenser l'ouvrage d'histoire 
de la civilisation polonaise le plus méritant a été réparti, à savoir: 
1) 2000 francs à M. Dr. Tokarz pour son ouvrage: „Hugo Kotta- 
taj“, 2) 1000 francs à M. Dr. Kieszkowskı pour son ouvrage: 
Christoph Szydtowiecki“. 
Le Prix Linde destiné à récompenser l'ouvrage de Linguistique 
polonaise, le plus méritant, est décerné à M. Adam Antoine Kry- 
ski pour son ouvrage: ,La grammaire polonaise 3-me édition“. 
Séance du lundi 9 Mai 1904. 
PrésineNce DE M. E. GODLEWSKI. 
23. MM. J. HETPER et L. MARCHLEWSKI m. t. Studya nad barwikiem 
krwi, Il. (Studies on the blood colouring matter, II. prelimi- 
nary note). (Recherches sur la matière colorante du sang). 
(Planches IV, V). 
In our first preliminary note !) on the same subject we succeeded 
in proving that Mörners haemin is a product closely allied to 
acethaemin, that its composition depends in a considerable degree 
on the physical condition, under which the experiments are carried 
out and that, in most cases, this haemin contains only very little 
of ethoxylgroups, although it is never quite free from them. We 
succeeded also in proving that it is possible to eonvert Mörners 
haemin into „acethaemin* and then the question to be solved re- 
mained whether acethaemin is the first coloured derivative of hae- 
moglobin, resulting from a hydrolytical process, or whether. as the 
name implies. the acetic acid radical forms an integral part of the 
molecule. In view of the ünability of spiitting off acetic acid by 
caustie alkalies or any other saponifying process, Nencki and Za- 
leski?) esuciuded that acetie acid is not present in acethaemin in 
the form of an acetyl group attached t5 oxygen or nitrogen. the 
possibility however of the CH,.CO group being connected with 
a carbon atom was not excluded. More decisive results were ob- 
1) This Bulletin 1903 p. 795. 
*) Z. physiol. Ch. 30 498 (1900). 
