-92 -. 



209. Franzen, Ho and H. Kaiser. The chemical constituents of green plants. 



XXVIIIo The acids of the tamarind (Tamarindus indica) precipitable with 

 lead acetate. ' Hoppe-Seyler *s Z. physiol, Chem. 129 , 80-91+ (1923). Abstr.. 

 C. A. 18, 1318. J. Chem, Soc. 1 923, i> 101+5. 



21Q, Franzen, H. and E. Keyssner. The chemical constituents of green plants. 



XVII* The presence of lactic acid in the leaves of the blackberry (Rubus 

 fructicosus). Hoppe-Seyler 's Z. physio 1. Chem. 116, 166-8 (1921). Abstr. « 

 J* Chem. Soc. 1922 . i, 310. 



211. Franzen, H. and E. Keyssner. The chemical constituents of green plants. 



XXIXo Several water-soluble constituents of blackberry leaves (Rubus 

 fructicosus). Hoppe-Seyler T s Z. physiol. Chem. 129 , 309-19 (1923). 

 Abstr. - C. A u 18, 1318. J, Chem* Soc. 1923 , i, 10i|5. 



212. Franzen, H. and E. Keyssner. The constituents of green plants. XXIII. Malic 



acid in plants. Biochem. Z„ 135, 183-216 (1923). Abstr. -J. Chem. Soc« 

 1 923, i, 1+27. C. A. 17, 2iil42r Chem. Zentr. 1923, III, 678. 



213* Franzen, H. and R. Ostertago The chemical constituents of green plants* 

 XVIII, Acids of sorb apples (Pirus aucuparia) precipitable with lead 

 acetate. Hoppe-Seyler T s Z. physiol. Chem. 119, 150-65 (1922). Abstr. - 

 C A. 16, 31+99. J. Chem. Soc, 1922 , i, 6l6. 



211^ Franzen, H, and R. Ostertag. The chemical constituents of green plants. 

 XXI, The non-existence of Crassulaceae malic acid. Hoppe-Seyler f s Z. 

 physiol. Chem, 122, 263-97 (1922). Abstr.- J. Chem. Soc. 1922, i, 1223. 



215. Franzen, H* and R. Ostertag. 7he chemical constituents of green plants. 



XXVII. Succinic acid. Biochem. Z. 136, 327-35 (1923). Abstr.- C. A. 17* 

 3358. J. Chem. Soc. 1923 , ij 636. Chem. Zentr. 1923, III, 939-1+0. 



£l6o Franzen, H. and E. Schuhmacher. The chemical constituents of green plants 

 XIVc The acids in the currant (Ribes rubrum) which are precipitable by 

 lead acetate. Hoppe-Seyler ! 's Z. physiol. Chem. 115? 9-37 (1921). Abstr, < 

 J. Chem. Soc. 1922, i, 310. 



217. Franzen, H. and E. Stern. The chemical constituents of green plants. XV. 



The presence of lactic acid in the leaves of the raspberry (Rubus idaeus)^ 

 Hoppe-Seyler 's Z. physiol. Chem. 115, 270-83 (1921), Abstr.- J. Chem. Sod 

 1922 , i, 311- 



218. Franzen, H. and E« Stern. The chemical constituents of green plantso XIXo 



Occurrence of lactic and succinic acids in the leaves of raspberry (Rubus 

 idaeus). Hoppe-Seyler's Z. physiol*, Chem. 121, 195-220 (1922). Abstr. - 

 C. A. 17, 12l+* J. Chem. Soc. 1922, i, 975. 



219a Fremy, E. Investigation of the chemistry of balsam. Ann. chim. et phys. 

 (Paris) /2 J 70, 180-205 (1839). Abstr.- Ann. Chem. Justus Liebig 30, 

 321+-1+0 (1819). 



220. Freuderiberg, K. and J. Geiger Configuration of the tertiary carbon atom IV 



Ann. Chem. Justus Liebig 575, 11+5-53 (1952). Abstr. -C. A. 1+7, 3801+. 



221. Frey-Wys sling, A. Die Stoffausscheidung der hBheren Pflanzen* Springer, 



1935. Cited by (78). 



