198 IV. OILY COMPOUND COMBUSTIBLES.— 



lint soaked in it may be applied. — When the object is to employ 

 frictions, from two to eight drops are added to each ounce of 

 water. The proportions for creosote ointment are 10 drops of 

 creosote to 1 ounce of lard. For internal administration it may 

 be given either in pills or draught, the former being made of one 

 or two drops of creosote combined with some absorbent powder 

 and mucilage, the latter of the same quantity, and some camphor 

 mixture. Creosote may be inhaled either by steeping paper in 

 it, and placing this close to the nostrils, or a portion of it may be 

 poured into hot water in a Mudge's inhaler, and the creosoted 

 vapour inspired in the usual way. When its internal use is 

 continued for too long a time, it is apt to produce irritation of the 

 system, and pains in the stomach and bowels. Demulcents should 

 always accompany it. 



CAMPHIRK 



Rough camphire, Laurel camphire, Camphora. Obtained 

 from the roots and shoots of the Lauriis camphora, L. cinna- 

 momum, and Capura curundu, by distillation with water. From 

 China and Japan. 



Dryobalanus camphire. Very little of this camphire comes 

 to Europe, it being carried to China, where it sells for about 30 

 times the price of their own laurel camphire. Obtained by 

 merely spHtting the Dryobalanus camphora ; the heart of this 

 tree containing camphire mixed with oil of camphire. From 

 Sumatra and Borneo. 



Refined camphire, by sublimation with one sixteenth its 

 weight of hme in a very gentle heat. Camphire is stimulant, 

 narcotic, and diaphoretic, gr. v to 3J, in pills or a bolus; too 

 large a dose occasions vomiting and convulsions, counteracted by 

 opium ; suspended in liquids, by means of mucilage, yolk of egg^ 

 or almonds. Camphire is put into boxes to keep insects from 

 them, and is used in fireworks ; it renders copal soluble in some 

 essential oils. 



Liquid camphire, Oil of camphire^ Camphora Uquida, Oleum 

 campliorce. From Dryobalanus camphora, by piercing the tree. 



Caratte camphire. In tears, from the caratte. From 

 Brazil. 



Rosemary camphire. From the oil by a careful redistil- 

 lation, without addition, of one third of the oil ; the residuum 

 affords crystals of camphire ; on separating which, and redistilling 

 the remaining oil two or three times, the w^hole of the camphire, 

 1 oz. from 10 of the oil, may be obtained. 



Sweet marjoram camphire, about 1 oz. from 10 of the oil; 

 not volatile ; when set on lire it soon goes out. — Sage camphire^ 

 1 oz. from 8. 



