46 ODOROGRAPHIA. 
it has had any commercial value. From the fact of one of the 
largest supplies of Rusa oil being from the Nimar district of 
Khandésh, Bombay Presidency, the oil has come to bear the com- 
mercial name of Nimar, Nimaur, and Namar. Dr. Dymock, 
describing the manufacture in this district, states that an iron still 
is used, and only a very small quantity of water added to the grass; 
when the still is carelessly worked the grass burns, and communi- 
cates a dark colour to the oil, which should be of a pale sherry 
colour when good. The odour at first recalls that of the rose, but 
this sensation is almost immediately followed by a strong odour 
of lemonor citron. By rectification the oi] is rendered colourless, 
and the odour of lemon is then much less marked. 
The grass flowers in October and November, and is then fit for 
cutting. Dr. Dymock states that 373 lbs. of grass received from 
Khandésh and distilled under his own superintendence in Bombay, 
yielded 1 lb. 54 ozs. of oil. 
The oil is largely adulterated in the districts where it is distilled, 
the distillers being regularly supplied with turpentine from Bombay; 
the oils of gurjon, coker-nut, ground-nut, rape, linseed, and 
cotton-seed being also used. With turpentine and ground-nut the 
resulting turbidity passes off in a day or two, hence they are pre- 
ferred; especially turpentine, as it is not at once detected by the 
evaporation test. The oil is exported from Bombay to the Red 
Sea ports (chiefly to Yedda), to Constantinople, Trieste, and 
London. Before being sent to Turkey, which absorbs the great 
bulk of it, large quantities are sent to Paris for rectification. In 
Turkey it is subjected to a special treatment, which appears to 
render it more fit to mix with otto of rose without betraying its 
odour ; this process consists in shaking it with water acidulated 
with lemon-juice, and then exposing it to the sun and air. By 
this process it loses its penetrating after-smell and acquires a pale 
straw-colour. This process was described by Mr. Baur of Con- 
stantinople*. 
As found on the London market it varies greatly in quality. A 
distinction is often made commercially between Oil of Palma Rosa 
and Essence of Indian Geranium, although both are identical pro- 
ducts of the same plant; the first is probably only a superior 
quality, or contains a small addition of oil of pelargonium. For 
* Neues Jahrbuch fiir pharm. Jan. 1867. 
