— 142 — ^ 



Upon oxidising the solution containing the aldehydes with oxide of 

 silver the alcohols had remained unattacked; they were removed from 

 the reaction-mass- by steam distillation. When carefully tested 1 ) the al- 

 cohol mixture was found to consist of butylene alcohol, pentylene alco- 

 hol, hexylene alcohol, an alcohol C 8 Hi 4 and several of the higher al- 

 cohols. It is not yet certain, although it is probable, that the hexylene 

 alcohol which is found in hornbeam leaves is identical with that which 

 was discovered by van Romburgh-) in tea oil. 



A treatise by Nellie Wakeman, which has been published as a Bulletin 

 ®f the University of Wisconsin, No. 448, Science Series, Vol. 4, No- 4> 

 contains a review of the phyto- chemical work relating to the various 

 Monarda-species (N. O. Labiatse) 3 ). It is not necessary for us to refer in 

 detail to this publication, seeing that everything which concerns our special 

 domain has already been discussed in our Reports under the heading of 

 the particular oils. Botanically, the Monarda-genus appears to have been 

 very little investigated. The known species, numbering about 26, together 

 with their 36 synonyms, have been brought together in table-form by the 

 authoress. 



A few Monarda-species have been examined for their oxidase content, 

 in the course of which investigation it was found that the young upper 

 leaves contain the largest proportion of these ferments. 



H. Herissey 4 ) has isolated from the leaves of Photinia serrulata Lindl. 

 (N. O. Rosacea?), the familiar amygdonitrile glucoside which splits off 

 hydrocyanic acid. 



It had already previously been discovered that Photinia serrulata 

 belongs to the group of plants which yield hydrocyanic acid 5 ). 



An article by E. Bourquelot and M. Bridel 6 ) deals with the synthetising 

 action of emulsin. The authors found that a mixture of anhydrous glucose, 

 saligenin, and emulsin in 85 p. c. alcohol gives rise to an amorphous, trans- 

 parent body readily soluble in water; [«] D — 30,02°. This compound is 

 identical with the /?-ethylglucoside of Konigs and Knorr 7 ). 



The /^-methyl- and the /^-propyl glucosides 8 ) have also been obtained 

 by Bourquelot and Bridel*). They have further demonstrated by experiment # 



*) 9 th paper. 



2 ) Loc. cit. 



3 ) Comp. Report Oktober 1904, 58. 



*) Journ. de Pharm. et Chim. VII. 5 (1912), 574; Bull. Soc. chim. IV. 11 (1912), 680. 

 B ) Gildemeister and Hoffmann, Die atherischen Ole. 2 nd ed., Vol. I, p. 550. 

 e ) Journ. de Pharm. et Chim. VII. 5 (1912), 569; 6 (1912), 13. 



7 ) Berl. Berichte 34 (1901), 957. 



8 ) Ibidem 56, 97. 



9 ) Ibidem 164. 



