NI OTHER NC NOTES on ESSENTIAL, Os. Red irc OOO ms (by 
h aoe plants: bie came. Lean one. Gao pee same stot of the Garrigue 
ns i in the neighbourhood of peepee ee were divided into four sets: -— 
| ae third ‘set, ‘planted ina frame under red glass; 
A dy fourth Sef, left on the spot. 
"The leaves. were Soniewbat fats dun those of the 4) set Wich had been left — 
Be spot; besides, the stalks were a. little nee Most of the 2 oe flowered 
as not he case with those. mee blue. glass. 
_ After these 20 days, the plants were ice and distilled, the: thymol in the oil 
ined being determined by transformation into diidothymol. ney 
The oil from a) contained 45 per cent., from b) 36 per cent., from c) 25.5 per cent. 
~ and from d) 92.5 per cent. of thymol. a per these results, ihe formation of thymol — 
_ seer is to decrease as the plant loses its character of a xerophyte. The red rays are - 
mos ‘detrimental to. the formation of noe the blue ones less. Saeed 
‘s A eS Oil. eccatne ie our own oe experience, dry Thurideian tenon 
# cots. yield on distillation 0.5 to 0.9 -per cent., those of Dutch origin about 1 per cent. a) . 
of essential oil. Swedish valerian root seems to contain a far higher percentage, as 
ws Séderberg*) reports. He distilled with steam, neutralized the distillate with N/20 lye | 
_ ane | shook it with ether. The ether was then distilled off and the residue dried in a 
ccator. ; . | 
12 ‘per cent. of Motil oil OF, éaleulated for iy saneence, Zs 2.43 per eee whereas 
th 2 eae in aati of the same year eee be £3 and 2 ao cent. Perce 
\ 
Winterareen Oil. _Puran Singh*) indicates ae following constants - for an oil 
1 1.185, ay Oso A: “4000, SL: Giter one hour’ S S oGnE Abu 362. ge = 99.14 per erik 
Beal salicylate *), ‘Soluble in 6 vols. of alcohol of 70. per cent. _ Excepting the 
a a 3 “8 Gildemeister and Hoffmarin, Die itherischen Gle, 294 ed., vol. II. page 63. — 2) Svensk farm. tidskrift 
5 Schweiz. Apoth. Zig. 56 (1918), 161. — *) The Indian Forest Records 5 (1917), No 8; Perfum. Record 8 
i: The 8. Vv. 362. 9 means a content of 98.48 per cent. of methyl acieviate, not 99.14 per cent. 
4* 
