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Oil from Hyptis spicata (Poit.) Briq. (Mesosphaerum spicatum). 
The plant belonging to the family of the labiatse, and which, like the 
two following, grows in Florida in great abundance, yielded a very 
small quantity (about 0,005 Vo) ^ bright -yellow oil with a faint 
mint-like odour: dj50=o,9i5; ap=: — 27^25'; acid number = 2,1 7; 
ester number — 4,35; insoluble in 10 volumes 80^0 alcohol; further 
determinations of solubility could not be made owing to lack of material. 
Judging from the odour, it is probable that the oil contains small 
quantities of menthone or pulegone. 
Oil from Ambrosia artemisiaefolia L.^) The young not 
flowering plants yielded about 0,15^/^ of a green oil with a pleasant 
aromatic odour, which had the specific gravity 0,876 at 15°; a^y — — 1°; 
ester number = 7,94. The oil makes a clear solution with an equal 
volume 90^/0 alcohol, which becomes cloudy when more solvent 
is added. 
Oil from Eupatorium capillifolium , dog fennel oil 2). The 
pale-yellow distillate obtained from the flowering herb in a yield of 
about o, I ^/o, agrees well in its constants with a previously examined 
oil^), d^50=: 0,926; Op = -|- 18^38'; ester number = 7,11; makes 
a cloudy solution with 3,5 and more volumes 90 alcohol. High 
phellandrene content. 
A number of South Australian eucalyptus and cajeput oils can also 
be mentioned. 
All the eucalyptus oils^) had a high cineol-content, were free from 
phellandrene, and dissolved in i to 1,5 and more volumes 80^/0 alcohol. 
Oil from Eucalyptus microcorys F. v. Miill. d^go = 0,9038; 
aD = +i2°29'. 
Oil from Eucalyptus punctata D. C. d^go = 0,9060; 
aj) = -j-4^ 10'; small quantities of cuminic aldehyde could be detected. 
Oil from Eucalyptus resinifera Smith, d^go^ 0,9123; 
ai) = -|-6°i'. The oil differs considerably in its constants from one 
which we examined years ago, and we must therefore assume that the 
latter, whose origin was not quite certain, was the distillate from another 
species of eucalyptus. 
^) See also Gildemeister and Hoffmann, "The Volatile Oils" p. 672. 
^) Accordirg to the U. S. Dept. of Agriculture, the name of the plant from 
which dog fennel oil is obtained, is not, as had hitherto been accepted, Eupatorium 
foeniculaceum Willd., but Eupatorium capillifolium (Lamarck) Small. 
3) Gildemeister and Hoffmann, "The Volatile Oils" p. 667. 
^) "With regard to the eucalyptus oil mentioned here, comp. also Gildemeister 
and Hoffmann, "The Volatile Oils" p. 533, 534, 532. 
