76 PRINGSHKI.Vl's RESKARCUES ON CHLOROPHYLL. 



Pringsheim's Researches on Cht.orophyllA Translated 

 and condensed by Professor Bayley Balfour, of Glasgow 

 University. (With Plates VIII and IX.) 



For the past two or three years the author has been 

 en<yaored with an investigation of the character of chlorophyll- 

 cor])uscles, of the action of light upon them, and the function 

 performed by chlorophyll in the plant. From time to tim.e 

 his results have been published, and these are now all 

 brought together in the paper, copiously illustrated, which 

 is here presented. The papers on the subject previously 

 published by the author are, — 



1. "Ueber Lichtwirkung und Chlorophyllfunction in der 



Pflanze." ' Monatsb. d. Berl. Akad. d. Wiss.,' July 

 1879. 



2. " Ueber eine Methode raicroscopischer Photochemie." 



^ Verhandl. d. Bot. Ver. d. Prov. Brandenburg,' July 

 1879. 



3. " Ueber das Hypochlorin und die Bedingungen seiner 



Entstehung in der Pflanze." 'Monatsb. d. Berl. 

 Akad. d. Wiss.,' November 1879. 



4. " Remarques sur la Chlorophylle.-" ' Comptes Rendus,' 



xc, Jan., 1880. 



5. " Zur Kritik der bisherigen Grundlagen der Assimila- 



tionstheorie der Pflanzen.^' ' Monatsb. d. Berl. Akad. 

 d. Wiss.,' Feb. 1881 — 

 and they may be consulted for details regarding the experi- 

 ments. 



In this communication the subject is treated of in the 

 seven following sections. 



I. Structure and Composition of Chlorophyll-Corpuscles. 



II. Method of Microscopical Photochemistry. 



III. Action of Light. Paralysis and Death from Light. 



IV. Respiration of Green Tissues in Light, and the 

 Function of Chlorophyll. 



V. Assimilation and Colour. 



VI. Formation of Hypochlorin in Young Seedling Plants 

 and its Relations to Assimilation. 



VII. Some Details of Experiments. 



I ' TJntersuchungen iibcr Liclitwirkniif? und CliloroplivU function in der 

 Pflauze.' Von N. Pringslieim, S. 152, mit 16 lithographirteu Tafeln. 

 Leipzig, 1881. 



