20 MEBldlNAL USES OF HOPS. 



200 parts water, strained, and evaporated on a steambath, the alcoholic 

 extract being in the meantime evaporated at a temperature between 

 68 and 77 Fahr. The properly concentrated liquids are mixed and 

 brought to the measure of 45 parts. The preparation, which is effective, 

 requires shaking before dispensing it.* 



Dr. Dyce Duckworth, in a communication to the ' Pharma- 

 ceutical Journal/ in 1868,f remarks: 



" It is always desirable to possess the most powerful and 

 concentrated preparation of the vegetable Materia Medica, 

 and as no available active principle has as yet been separated 

 from the hop, it should, in the meantime, be the endeavour of 

 the pharmaceutist to obtain, and the physician to employ, 

 the drug in its most complete and essential form. Hence I 

 believe that at least one preparation of lupuline should be 

 in use. 



" The powder itself is inconvenient from seven to twelve 

 grains are requisite for a dose, and it must be given in the 

 form of pill. In this way, too, an amount of lignin and 

 other inert principles are ingested, which it is not desirable 

 to employ, and which, in certain cases of gastric disease, 

 would be positively harmful. 



" This substance appears to be most fully appreciated in 

 the United States of America. In the authorized codex of 

 that country, I find there are no fewer than three prepara- 

 tions of it : a tincture, prepared with rectified spirit ; a liquid 

 extract (corresponding in strength to those of the ' Pharma- 

 copoeia Britannica,' viz. part for part); and an oleo-resin. 

 The French Codex takes no notice of it. In the Edinburgh 



* ' Arch. Phar.,' Oct. 1875, p. 33-1. 

 t Vol. x., Second Series, p. 216. 



