about 196.5 cm. The largest ot of the Black Mint is. thebetore! 
under climatical conditions equalling those of Virginia or North eas 
the needles of spruce-firs, pines, etc., there are some notes on nee 
from the needles of the black-pine, tried in Austria» during the waby: 
absolutely unremunerative, owing to the ee ay viel. 
the other Renal the Le Redes would trample dour the undergrowth ana ner 
of fire. AS, however, the the views on this gece seem to. have changed, 0 
4 
Ryu 
| Following up the little notes, which we have published . oceanionle | one e fatt, 
oil of fir-seed*), we wish to acquaint our readers with an article by R. Francé®*), whic 
appeared in “St. Hubertus”. He has found that fir-needles contain an oil w 
easily be used for technical purposes on account of being completely Sz 
The more the warm season advances, the scarcer it gets, whereas it is pi 
greater proportion during cold periods. As stated by him, it can be 
from needles that have recently fallen. The oil resists the same temps, 
tree itself. A aa 
It seems from this actice that a fatty oil is elena OU: 3 iy (Son 
Oil of Pycnanthemum lanceolatum. The labiate Pyenanthemum anceo at 
Pursh., growing in the United States, contains an oil, which it is’ difficult t distin : |SI 
in smell from pennyroyal oil and which, according to Corell *), contains , , 
pulegone. E. R. Miller®) confirms the presence of these two bodies and 
further constituents: geraniol, dipentene, most likely two other terpenes 
also thuyone. The young plants contain less ketones than the. older 
reaching a maximum, however, the amount of the ketones diminishes as 
the plant advances. Young plants give as much carvacrol as ‘more 
specimens. The percentage was found to vary from 14.5 to 58 per en 
of the oils nee. 25 per cent. or mores The anquit of ketones © 
AP) Deutsche Parf.-Ztg. 5 (1919), 45. — *) Conia for instance igor 
fi angew. Chemie 81 (1918), II]. 490. — *) Comp. Gildemeister and Hotnini ‘The V 
p. 490. — -5) Circular, Pharm. Exper. Stat. Univers., Witte. 2 GS 
to fits Record 9 (1918), 256. = eeihs 
