7o — 



I. Fresh Miltitz i 

 root, I st year\ 



II. Fresh Thurin- 

 gian root, 2 nd 

 year 



Yield 

 0,22% 

 0,55% 



1,0310 

 1,0326 



«D 



+ i°3o' 

 + o° 4 6' 



nj)2<)° 

 1,55148 

 1,54944 



Acid 

 no. 



Ester 

 no. 



223,5 

 224,5 



Ester 

 no. 

 after 

 acet. 



227,8 



Solubility in 

 80 p. c. ale. 



in 2 vols, 

 and more 



in 2,5 vol. 

 and more 



From the but slight increase in the sap. no. after acetylation of the 

 oil as compared with the original sap. no. we may infer that, besides 

 the esterified alcohol, practically no free alcohol is present. 



Matico Oil. We observe from a note by G. Weigel in the Pharma- 

 zentische Zentralhalle 1 ) that there have recently appeared in commerce 

 matico leaves from Piper Mandoni D. C. which differ in important parti- 

 culars from the well-known variety of the drug. They attain a length of 

 from 18 to 20 cm., and even up to 25 cm., and mostly measure from 

 12 to 15 cm., but often as much as 20 cm., in width. The stalk is 

 strong and very hairy, and the leaf is less acutely pointed than that 

 of the familiar species and is of an oval-ovate or reversed heart shape. 

 On the other hand, genuine matico leaves from Piper angustifolium 

 Ruiz et Pavon are narrow and lanceolate, about 1 5 cm. long and only 

 4 cm. broad. 



We procured a parcel of the Piper Mandoni leaves for distilling 

 purposes and obtained from them about 0,8 °/ of a brownish oil, with 

 a balsamic odour and with the following constants: diso 0,9360, 

 «d -{-i 5 / , n D20° M97°4> sap.no. 1,8, ester no. 5,1, ester no. after 

 acetylation 46,7, soluble in 6 vols, and more of 70 per cent, alcohol. 



Oil of Monarda fistulosa. E. Kremers, in collaboration 

 with N. Wakeman 2 ), has made experiments in the quantitative determ- 

 ination of the oxidase which occurs in the leaves of Monarda fistulosa, 

 and which converts into thymoquinone the hydrothymoquinone con- 

 tained in this plant 3 ), and the two investigators, in connection with 

 these experiments, have made researches on both these combinations. 

 We will only specially mention here that thymoquinone, dissolved in 

 alcohol or limonene, was reduced to thymo - quinohy drone or hydro- 

 thymoquinone; for the rest a reference to the original paper must suffice. 



Mustard Oil, genuine. We are just now engaged in working 

 up a large parcel of exquisite material and shall shortly be able to 

 replenish our supplies. At the moment we have not yet been able 



*) Pharm. Zentralhalle 49 (1908), 974. 



2 ) Pharm. Review 26 (1908), 314, 329, 364. 



8 ) Comp. Report October 1904, 58. 



