129 DOREMA AUCHERI 



his published f Travels ' about this, or indeed about any of the 

 plants he brought back. The plant flowers in June. 



Boissier, Fl. Orientalis, ii, p. 1009 ; Fliik. & Hanbury, Pharmaco- 

 graphia, p. 289. 



Official Part and Name. AMMONIACUM ; a gum-resinous exuda- 

 tion from Dorema Ammoniacum, Don. (B. P.). The gum-resinous 

 exudation from the .stem (Ammoniacum) (I. P.). AMMONIACUM ; 

 a gum-resinous exudation from Dorema Ammoniacum, Don. 

 (U.S. P.). 



It should be noticed here that the ammoniacum now used in 

 medicine, or Persian Ammoniacum, is not the ammoniacum of 

 Hippocrates, Dioscorides, and Pliny, which was employed for fumi- 

 gation. The latter, which was derived from Africa, and may 

 be distinguished therefore as African Ammoniacum, was, according 

 to Lindley, " certainly the produce of Ferula tingitana." This 

 kind of ammoniacum is still collected in Morocco, and forms an 

 object of traffic with Egypt and Arabia, and Dr. Leared has lately 

 obtained some roots of the plant from Morocco, which have been 

 planted in the Botanic Gardens at Kew and Regent's Park, 

 so that it is hoped that its botanical origin, which has been 

 questioned, may be soon conclusively ascertained. 



It should be also noticed that the plant now under descrip- 

 tion is not the recognised botanical source of ammoniacum 

 of either the British, Indian, or United States Pharmacopoeia. 

 But that Dorema Aucheri does afford very good ammoniacum may 

 be seen by examining the gum-resin yielded by it which is 

 preserved in the British Museum. The tears are in this somewhat 

 smaller, and the surface of the resin darker in colour than in the 

 ordinary lung. As it is not, however, the official plant, our notice 

 of the Collection, Commerce, Composition, General Characters, 

 Medical Properties, and Uses of Ammoniacum, is given under 

 Dorema Ammonia.cum. 



, Pharm acographia, p. 289; Per. Mat. Med., vol. ii, pt. ii, p. 184; 



Hanbury, in Pharm. Journ., March 22, 1873, p. 741 ; Moss, in 

 Pharm. Journ., March, 1873, pp. 742 and 761. 



