yf: ODOROGRAPHIA. 
enquiry from the Pharmaceutical Society, to the following effect :— 
The finest limes in the West Indies are grown at Trinidad, on 
trees quite unequalled for size and exuberance by those of any part 
of the Western tropics. Their odour more resembles that of 
lemons produced in Europe than of the limes produced there. The 
young shoots and all tender parts of these Trinidad limes have 
the odour of Aloysia citriodora (the lemon-scented verbena), the 
stronger lime-odour being developed in the older parts. In the 
treatment of the fruit for obtaining the oil, the more rapid the 
process the more pronounced is the lemon odour in the result, if 
perfectly fresh fruits are used. The strong flavour of limes, more 
or less tinged with that of turpentine, seems to be a result of 
treating stale or decomposed fruit-tissue. The plan adopted on 
economic grounds at Dominica and elsewhere, of crushing the 
limes as received from day to day, and then, on the attainment of 
a large quantity of pulp, proceeding to distil, seems completely 
preventive of a fine flavour in the resulting oil. The sp. gr. of the 
Trinidad oil was found to be 0°8741 and the boiling-point 177°°7 C. 
It is soluble in five parts of alcohol of sp. gr. 0°838, as is ordinary 
oil of limes. Commercial oil of lemon is barely soluble in 15 parts 
of the same menstruum. 
The Shaddock is the Citrus decumanum, a distinct species, re- 
markable for the large size of all its parts. It is a native of China 
and Japan, and owes its name to Captain Shaddock, who introduced 
it into the West Indies. Its fruit is spheroidal and greenish 
yellow, the pulp red or white, the juice sweet or acid, the rind is 
thick, fungous, and bitter. Thunberg says the fruit in Japan grows 
to the size ofa child’s head, and Dr. Sickler states its weight at 14 lbs. 
The “ Mandarine,” or Maltese orange, is the Citrus nobilis, a 
very small orange of flattened shape, with a thin rind which 
separates spontaneously from the pulp; so that when quite ripe 
the latter may be shaken about inside. The perfume of the 
flowers, leaves, and rind is delicately soft, and the taste of the 
pulp very sweet. In China, where this delicious variety has been 
raised, the fruit is generally presented to the Mandarins, hence its 
name. It is now successfully cultivated in Malta and the Azores, 
and essential oils obtained from it are quoted by manufacturers. 
In 1857 the oil was not obtainable on the London Market ; but 
its properties were carefully studied by de Luca, who obtained 
specimens of the fruit, expressed the oil, and communicated the 
