386 



'* Lybia, Barca, Aegyptus occidentalis," as the country of origin for 

 gummi ammoniacnm. Nowhere can I discover the slightest 

 reference to Morocco as another source of the drug, although it is very 

 probable that when once the Morocco Fashook reached Alexandria 

 it got mixed up with the Cyrenaica resin and followed the 

 same trade channels. One thing is certain, however, that the drug 

 trom wherever it may have come, was nearly always the coarser 

 kind, the ammoniacnm in lumps, with plenty of impurities.* 

 Meanwhile the Persian drug, the gum resin of Dorema ammonia- 

 cum cre.pt in as a substitute for the African article unnoticed 

 by the European pharmacists. Valentini (1732) t appears to have 

 been the first to record it, although he himself was not aware of 

 its distinctness from the ammoniacnm of Dioscorides j but his 

 words magnis frustris multa alba grana includentibus ex India 

 Oriental! in Europam fertur," leave no doubt that it was the 

 Dorema resin to which he was referring. This came by way of 

 oveSl Z d - AleXand ™' f* P art of it may have also come 

 5 SU S * T ffiS2? d b 7 a passa ^ e iQ Murray's Apparatus 

 tran^XrZ U (17 T 92 >- V ° K vL ' P " 19 ° : " Per Turciam ad nos 

 S^™^"^^^^^ ^ the gum received 



Morocco 



Tt AVQ8 ^tiItt +u j.1 r ii . ^ v^jxciiaiua, ur morocco gum. 



art cle w th ^ tbat at tention ™ concentrated on the Persian 

 Dorema nt!^ remU th ^ lt8 S0UrCe was at le ^ th discovered in 



AmZ^Z7^T W \^ lt hds Poetically crowded out the 

 At "can Product from the European market. 



The Morocco ' J^.ooWas first noticed, as already stated, 



Attempts ' to «f° m the , early years of the last century 

 macr P reDeaternt T * * -ft^- f ° r ifc in Europe have been 

 M, e ^S!L bnt T th H u ttle success > owing, no doubt, 

 able quanuS It % meth °u d ° f Preparation.' Consider- 



natmnrexhibTtion of llT ^K* 6 ? K the Vienna inter " 

 several kiWm, in l\ ° gel * Scribed thorn as cakes, 



consisting T^£ J%& %** U ? of f dark brown mass 

 soil, sand and f ra m£lJ£ ^f + i ' , the Slze of a walnut or less, 



for Mo^^^^A*- The P f nCipal ** P° rt 



via Gibraltar to ASdr a S™n ^ S"* 106 lt g06S m0Stly 

 from Mogador. Iexanaria - Sman quantities are also exported 



Chemistry. 



ammoTc If^e °<& ** ^ chemistry of the gum 

 Morocco gum has^ee/ . * ? Cutely unknown. The 



stitntion frJrnnZJn ^ r ™ ly ' bUt itS eXaCt COn " 

 G. GoldschmidtS olSl i y - treatin g ^ with molten potash, 



the formula CH O tfZS "T" 11 &Ud a crystallised substance of 

 turns T beautTful 5 rid me i to at 265 °< and U « aqueous solution 



Hirschsohn round Lbell £ 6 ^^ ° f ch?oride of ir0n ' 

 inclined to VceTneTtnPif 0n m P» wIience Tschirch is 

 Pjaceit next to Galbanum. The taste of thn Moroccan 



• &* footnote on p. 385. 



1 JSKS^*!* P- 279. 



«1 ed., p. 339. ' - C - V> *• p - 20 °' an <* T 8 chirch, Die Harze und Harzebehalter, 



Sea Too,!* J t. ■» 



2nd ed., p. 339. 

 1 See Tschirch, I.e. p. 340. 



