BULLETIN INTERNATIONAL 
DE L’ACADÉMIE DES SCIENCES DE CRACOVIE. 
CLASSE DES SCIENCES MATHÉMATIQUES ET NATURELLES. 
N° 4. Avril 
1908. 
Sommaire: 19. T. KOZN1EYVSKI and L. MARCHLEWSKI. On the conversion 
of phyllotaonine into phytorhodines. 
20. L. HILDT, L. MARCHLEWSKI und J. ROBEL. Über die Umwandlung 
des Chlorophylls unter dem Einfluss von Säuren. 
21. J. BIELECKI et AL. KOLENIEW. Recherches sur l’influence des grou¬ 
pes méthylés sur les propriétés tinctoriales des colorants basiques dérivés du 
triphénylméthane. 
22. J. DUNIN-BORKOWSKI. Sur le phénomène de Gürber. 
23. J. NOWAK. Untersuchungen über Cephalopoden der oberen Kreide in 
Polen. I. Teil. Genus Baculites Lamarck. 
24. H. WIELOWIEYSKI. Weitere Untersuchungen über die Morphologie und 
Entwickelungsgeschichte des Insektenovariums. Zweite Mitteilung. 
25. B. PETSCHENKO. Sur la structure et le cycle évolutif de Bacillopsis 
stylopygae; nov. gen. et nov. spec. 
Séance du lundi 6 Avril 1908. 
PRÉSIDENCE DE M. K. OLSZEWSKI. 
19. Przemiana filotaoniny zu fitorodyny. — On the conver¬ 
sion of phyllotaonine into phytorhodines. Mémoire de 
MM. T. KOZNIEWSKI et L. MARCHLEWSKI m. t. 
(Planches VII, VIII, IX). 
It is well known that chlorophyll behaves quite differently 
towards acids than alkachlorophyll. Whereas the former yields 
chlorophyllan *), phyllocyanine and phylloxanthine, the latter gives 
under similar conditions the so called ethers of phyllotaonine. These 
ethers were obtained by the action at ordinary temperature of ga¬ 
seous hydrochloric acid on alkachlorophyll dissolved in alcohol. 
The product of saponification of these ethers has been the subject 
of a research communicated in this Bulletin 2 ). We have shown that 
phyllotaonine is converted into a new substance which we have 
called allophyllotaonine by simply heating it to somewhat higher 
q Comp. Hildt, Marchlewski, Robel „On the action of acids on chlorophyll“ 
in this issue. 
2 ) 1907. p. 616. 
Bulletin III. 
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