OILS. 281 
slight admixture of pennyroyal. The supply of oil from the leaves 
is tolerably copious, roolbs. of the fresh green shrub, inclusive of 
branchlets, furnishing 630zs. of a pale-yellow, limpid oil, the odour 
of which is hardly distinguishable from that of oil of rue, though, 
perhaps, a little intense and penetrating. Its taste is very dis- 
agreeable and acrid, strongly resembling that of rue. The 
medicinal action of this oil is that of a diuretic and diaphoretic. 
(Report Dublin Exh., 1865.) 
All the colonies except Western Australia and Queensland. 
40. Mentha grandiflora, Bexth., N.O., Myrtacez, B.FI., v. 82. 
This mint oil has a fiery, bitter, and very unpleasant nauseous 
taste, together with a characteristic after-taste. It could not be 
used as a substitute for common peppermint, except for medical 
purposes. Its specific gravity is .g24, and its yield 50z. from 
10olbs. of the fresh herb. (Report of Dublin Exhibition, 1865.) 
New South Wales and Queensland. 
41. Mentha laxiflora, Bex‘h., N.O., Labiate, B.FI., v. 82. 
This plant yields, on distillation, a pleasant oil, similar to that 
from peppermint. 
Victoria and New South Wales. 
42. Nesodaphne obtusifolia, Benxth., (Syn. Beclschmiedia obtust- 
Jolia, Benth., et Hook.; Cryptocarya obtusifolia, F.v.M.); 
N.O., Laurinee, B.Fl., v. 299. £8. obtusifolia in Muell. 
Cens., p. 3. 
‘Queensland Sassafras.” 
One ton of the dry bark yields 7700z. of essential oil 
(Staiger), =2.15 percent. The specific gravity is .978 at 72°F. 
New South Wales and Queensland. 
43. Pittosporum undulatum, Vent., N.O. Pittosporez, B.FI., 
i, TTT. 
“Native Laurel.” ‘*Mock Orange.” ‘ Wallundun-deyren” of the 
aborigines. 
The oil obtained from the flowers by distillation is limpid, 
colourless, lighter than water, of an exceedingly agreeable jasmine- 
like odour ; the taste disagreeably hot and bitter, reminding one 
