432 W. Dörries: Chemische Physiolugie 1915 und 1916. [76 



815. Augustin, B. Adatok a szederlevelek kemiai összetete- 

 lenek ismeretehez. (Beiträge zur Kenntnis der chemischen Zu- 

 sammensetzung des Brombeerblätter.) (Bot. Közlem. XV, 1916, 

 p. 94-96.) - Ref. in Bot. Centrbl. CXXXV, 1917, p. 28. 



816. Baker, B. T. and Smith, H. G. Eucalyptus australiana sp. nov. 

 (..narrow-leaved peppermint") and its essential oil. (Journ. and 

 Proc. R. Soc, N. S. Wales XLIX. 1916, p. 514-524.) 



817. Baker, R. T. and Smith, H. G. A researcli on the Eucalypts 

 of South Australia and their essential oils. (Trans, a. Proc. R. Soc. 

 S. Austr. XL, 1916. p. 464 — 497.) — Eingehende Arbeit vom botanischen 

 und chemisclien Standpunkte. Die 31 ölgebenden Arten werden aufgezählt 

 und die Art des aus ihnen gewonnenen Öls besprochen. Fedde. 



818. Barbiori, N. A. Unmittelbare Analyse des Weizens. 

 ({'. R. Acad. Sei. Paris CLIX. 1915, p. 431-4.34.) Von Inhaltsstoffen wird 

 ein gelber Farbstoff, vorläufig Blein genannt, beschrieben; ferner KH2PO4 

 und KaS04. C'a3(P04)2; ausserdem Öl, Stearin, Palmitin, Oleopalmitin, aber 

 kein Lecithin, kein Monocaloiumphosphat, keine Chloride und keine 

 Carbonate. 



819. BaumaiiK, A. Beiträge zur chemischen Kenntnis der 

 Malzkeime. (Zeitschr. ges. Brauw. XXXIX, 1916, p. 363, 372, 379. 387, 

 396, 404, 413.) - Ref. in Centrbl. Biochem. Biophysik XIX. 1918, p. 684. 



820. Beals, C. L. and Liiidsey, D. R. Chemical composition, 

 digestibility, and feeding value of vegetable-ivory meal. (Journ. 

 Agric. Research VII, 1916, p. 301-320.) — Conclusions: ,,1. Analyses show 

 vegetable ivory to be carbohydrate in nature. containing about 5 per cent of 

 protein and 75 per cent of nitrogen-free extract. Fat and mineral matter 

 are negligible. while crude fiber averages 7 per cent. 2, Ninety-two and one- 

 half per cent of the nitrogen-free extract is mannan, a polymer of mannose 

 sugar. 3. Pentosans are present to the extent of 2 5 per cent. 4. Lignin, 

 galactan. staroh, and dextran are not found in vegetable ivory. 5. A nonnitro- 

 genous ,,alcoholic precipitate" amounting to about 2,5 per cent is present 

 which is not pentose in nature. It differs from fruit ,,pectin" in that it does 

 not form mucic acid and does not reduce copper. 6. By the use of Fehling's 

 Solution about 0,5 per cent of water-soluble reducing material and 2 per cent 

 of so-called total sugars are shown to be present after Inversion with hydro- 

 chloric acid in the cold. 7. The mannan in vegetable ivory is not entirely 

 hydrolyzed without at least 4 1 ^ hours' boiling in an acid Solution. The charac- 

 teristic ,.acid" color of the Solution bleaches out at the completion of hydro- 

 lysis. 8. With continued acid boUing the useof Fehling's Solution gives results 

 which, when estimated as dextrose. agree closely with the percentage of 

 nitrogen-free extract minus the percentage .,pectin" present. Otherwise 

 ßtated practically the entire nitrogen-free extract is accounted for in the form 

 of a hexose sugar or its condensation product, except a small percentage of 

 pentoses and pectin. 9. — 14. ..." 



821. Beckmann und Bark, E. Seetang als Ergänzungsf utter- 

 m.ittel. II. (Sitzber. Akad. Berlin 1916, p. 1009-1027.) - Ref. in Bot. 

 Centrbl. CXLI. 1919. p. 137-138. 



822. Bernitsky, J. Anatomischer Bau und Nährwert der 

 Gfl//um-Samen. (Kiserlet. Közlem. XVIII, 1915, p. 657 — 687.) — Ref. in 

 Bot. Centrbl. CXXXIV, 1917, p. 366-367. 



