642 



certain metals such as copper and zinc. We hâve hère either a case 

 of formation of ordinary salts or double Compounds similar to tbose 

 formed by phyllocyanin, which hâve been studied so thoroughly 

 by E. Schunck. The acetic acid solution of phylloerythrine treated 

 with zinc acétate turns green, red by transmitted light. In the 

 spectrum it causes three bands: 



Band I: ^ — 628 — 603 

 „ II: k — 575 — 559 

 „ III: k — 533 — 517 



An analogous Compound is formed by copper acétate. 



Phylloerythrine possesses also basic properties as shown by the 

 changes caused in its spectrum by minerai acids. 



Taking into account ail the properties of phylloerythrine as de- 

 scribed above. the conclusion may be drawn that this substance is 

 related closely to phylloporphyrin. obtained from Chlorophyll by 

 the action of alkalies at high températures, and that therefore the 

 change undergone by Chlorophyll, when passing through the animal 

 body, is far more energetic than was supposed hitherto to be the 

 case. A further study of this new and interesting substance I hope 

 to be able to undertake later on. 



Faeces of cows fed on materials not containing Chlorophyll 

 do not yield phylloerythrine. a proof that the latter substance is 

 really a derivative of chlorophyll and not of the red colouring 

 matter of the blood. 



Naktadem Akademii Umiejetnosci. 



Pod redakcya 

 CzJonka delegowanego Wydzialu matem.-przyr., Dra Leona Marchlewskiego. 



Krakow, 1903. — Drukarnia Uniwersytetu Jagielloriskiego, pod zarzadem J. Filipowskiego. 

 21 Listopada 1903. 



