456 W. Wendler: Chemische Physiologie 1921— 1922 [96 



to determine witli a considerable degree of certainty that it consists of the 

 aliphatic terpene alcoliol geraniol CioHigO. The evideuce for this conclusion 

 may be adduced from the faet that by the hydrolysis of the esters of tlie 

 apple a product was obtained which possessed, in addition to the odor of amyl 

 alcohol, a rose-like fragrance, and that by the oxidation of this product it 

 yielded, besides valerie acid a substance which had the characteristic odor 

 and other properties of the aldehydecitral. At the same time the formation 

 in very small amounts of the further oxidation products of geraniol or citral, 

 which are acetone and levalinic acid, was decisively indicated. It is probable 

 that geraniol, eitlier in the free state or in the form of esters, is contained in 

 varying amounts in all the numerous varieties of tbe apple, althougb to the 

 greatest extent in tbose which possess its distinctive odor. 



814. Power, F. B. and Chestiiut, V. K. Hex vornitoria as a native 

 source of caff eine. ( Journ. Amer. Chem. Soc. XLI, 1919, p. 1307—1312.) — 

 Summary: ,,The results of this investigation have demonstrated that an abun- 

 dant source of caffeine is available in one of our native plants, naniely, Ilex 

 vornitoria, Alton. Although considerable differences in the caffeine content 

 of the leaves of the plant have been found to exist, tliese are doubtless attri- 

 butable to varying conditions of soll and climate. It would therefore appear 

 that by the cultivation of the shrub under the most favorable conditions the 

 suppley of material for the production of caffeine could be increased to any 

 desired extent. So far as has at present been ascertained no other North 

 American species of Ilex than that above mentioned contains caffeine, and this 

 substance is also not contained in the leaves of the European hoUy, Ilex aqui- 

 foliiim Linne." 



815. Priestley, J. H. Suberin and Cutin. (New Phytologist XX, 



1921, p. 17 29.) — Ref. in Bot. Ctrbl., N. F. I, 1922, p. 18. 



816. Prin^sheim, H. und Laßmanii, M. Über Inulin und Glykogen. 

 II. Mitteilung über Inulin. (Ber. Deutsch. Chem. Ges. LV, 1922, p. 1409 

 bis 1414.) — Ref. in Bot. Ctrbl., N. F. I, 1922, p. 396. 



817. Priiiiisheim , H. und Aronowsky, A. Über Inulin. III. Mit- 

 teilung. (Ber. Deutsch. Chem. Ges. LV, 1922, p. 1414—1425.) — Ref. in 

 Bot. Ctrbl., N. F. I, 1922, p. 396. 



818. Priiis'sheim, H. und Persoh, AV. Über Methyl- und Azetyl- 

 produkte der ,,Polyamylosen". (Beiträge zur Chemie der Stärke, V.) 

 (Ber. Deutsch. Chem. Ges. 55, 1922, p. 1425—1433.) 



819. Prinsisheim, H. und Deniikos. J). Weiteres über die Poly- 

 amylosen. (Beiträge zur Chemie der Stärke, VI.) (Ber. Deutsch. Chem. 

 Ges. 55, 1922, p. 1433—1445.) 



820. Prins'sheim, H. und GJoldstein, K. Die Beziehung der a- und 

 ^-Polyamylosen zur Inhalts- und Hüllsubstanz des Stärkekorns. 

 (Beiträge zur Chemie des Stärkekorns, VII.) (Ber. Deutsch. Chem. Ges. LV, 



1922, p. 1446—1449.) — Ref. in Bot. Ctrbl., N. F. I, 1922, p. 395. 



821. PriiiKsheim, A. und Seifert, K. Zur Kenntnis des Steinnuß- 

 mannans. (Zeitschr. f. Physiol. Chemie 123, 1922, p. 205—212.) 



822. Pritzker, J. und Juiiijkunz, R. Zvir Kenntnis des Haselnuß- 

 öles, nebst einem Beitrag zur Bestimmung der Arachinsäure. 

 (Ztschr. f. Unters, d. Nahrungsmittel 42, 1921, p. 232—241.) — Neue Ergeb- 

 nisse wurden nicht erzielt. Arachinsäure konnte nicht nachgewiesen werden. 



