HUMULUS 163 



tributed throughout the temperate portions of North 

 America. It was used by the Indians in the form of 

 decoctions and infusions, as well as to keep off insects, 

 and by them it was introduced to the settlers, coming 

 thence to the attention of the medical profession. Its 

 chief use at the present time is in the making of the 

 volatile oil distilled therefrom, which is mainly em- 

 ployed as a protection against insects. This plant must 

 not be confused with the pennyroyal of Europe, a small, 

 aromatic herb, Mentha pulegium, common throughout 

 Europe, extending northward to Sweden, eastward to 

 Asia Minor and Persia, and southward to Abyssinia 

 and Arabia. The European pennyroyal, also a common 

 domestic remedy, has fallen into therapeutic neglect 

 by the profession. 



HUMULUS (Hops) 

 Official in every edition of U. S. P., from 1820 to 1910. 



Hops, Humulus Lupulus, is a climbing vine found in 

 thickets and along river banks throughout Europe, and 

 extending to and beyond the Caucasus and Caspian 

 regions. Introduced into America, hops have become 

 acclimated, and especially in the Northwest are culti- 

 vated in immense quantities. Hop gardens existed in 

 France and Germany in the 8th and 9th centuries, and 

 "Bavarian hops" were esteemed in the llth century. 

 It has been asserted that William the Conqueror, 1069, 

 granted the use of land for hop culture in England. 

 The original use of hops was in decoction as a stomachic 

 medicine, or a mild soporific, whilst their employment 

 in the making of malted liquors is familiar to all. As a 

 tonic, the hop is still valued in simple decoction and in 

 extract, both by the people and the profession of medi- 



