100 ZYGOPHYLLE^. 



la Erij^lish price-currents, eight sorts of linseed are enumerated, 

 namely, English, Calcutta, Bombay, Egyptian, Black Sea and Azof, 

 Petersburg, Riga, Archangel. The first three appear to fetch the 

 highest prices. 



Uses — Li medicine, linseed is chiefly used iu the form of poultice 

 which may be made either of the seed simply ground or of the pulver- 

 ized cake. In either case the powder should not be long stored, as the 

 oil in thccomminuted seed is vapidly oxidized and fatty acids produced. 

 An infusion of the seeds called Linseed Tea is a common popular 

 demulcent remedy. 



Adulteration — Linseed is very liable to adulteration with other 

 seeds,^ especially when the commodity is scarce. The admixture in 

 question is due in part to careless harvesting and in part to intentional 

 additions. In 1864 the impure condition of the linseed shipped to the 

 English market had become so detrimental to the trade that the im- 

 porters and crushers founded an association called The Linseed Asso- 

 cirtiioiio/Xoiir/oii, by which they bound themselves to refuse all lin- 

 seed contaming more than 4 per cent, of foreign seeds, and this step 

 very rapidly improved the quality of the article^ 



As the druggist has to purchase linseed meal, he must of neces- 



sitj rely to 



he derives his supplies. The p 



^ 



rape and mustard) which is common, may be recognized by the pun- 

 gent odour of the essential oil which they develope in contact with 

 water, ihe mtroduction of cereals would also be easily discovered by 

 lodme, which strikes no blue colour iu a decoction of linseed. The 

 microscope will also afford important aid in the examination of linseed 



Cako or iiipfil 



ZYGOPHYLLE^. 



LIGNUM GUAIACI. 



Li 



ignum sanctum; Guaiacnm Wood, Lignum Vitw ; F. Bois de 



(xalac; G. Guaialcholz, Pockhoh. 



Botanical Origin 



species of Guaiacum, nameiv- 



West 



ith ligl't 



bino fl«„.^ • • ' ^"^'^'-lAc-siz.tJu or low evergreen tree, wili^ ^^a- 



W nfti •'' Pa^Fuate leaves having ovate, very obtuse leaflets m 2, 

 tbun w/"" ?f""'' ^^^ --"^1^^^^ f™5ts. It grows in Cuba, Jamaica 

 Gon^tf f ?? *x^r^.P^"^"« °f t^^ south °side of the island). I>es 

 St LucL V^' ^-^-^^ ^^y^' (plentiful), St. Domingo, Martinique. 

 AmercTn cL^'^'T^'J^ '^^ ^^^'t^^ern coast of the South 



ports of hIv? ^^t ''. ^r^'ted), a portion of Ihat shipped from .^e 

 Ss oflSomS "^^^^''^^ '^^ ^^'^^^ ^"^^^'^^ oxportedMy the United 



guisLwe'bvlf? 7 ^" ^ ^['^ "'^^^^ resembling the preceding, but distiu- 

 gULshable by its leaves having 3 to 4 pairs'of leaflets which are very 



'TKlClCy 



