"BERGER A. — Sukkulente Euphorbien. Sg 1907 
. 2. Wien 1906 
. PORTH ket M. — eerie as ake über die Holle dés 
Kalkes in pe Pflanze (Wien 1906) 
GRAFE V. Ueber ein neues ai Formaldehyd Reagim 
(Wien 1906) ; 
KIMPFLIN G. — Se” ta: ae ifa Möthatial due bes vipwtank verte 
. (Paris 1907) a od TA D 
IE C. K.— ete anita der Labels Ruta Jena 1996 
Scortr L. — Contribuzioni alla Biologia fiorale, l-V 
USHER F. L. and PRIESTLEY J. H. — A study of the ni of Car- 
bon Assimilation in green plants . . . . ibn 
