162 PHARMACOPEIAL DRUGS 



HAMAMELIDIS CORTEX ET FOLIA 



Hamamelis Leaves, official in 1880 and 1890. Both the bark 

 and twigs, and the leaves, official in 1900. Harnamelis not recog- 

 nized in 1910, excepting as the "distilled extract of Witch Hazel," 

 Hamamelis Water. 



Witch-hazel, Hamamelis virginiana. The decoction 

 and infusion of the bark, as well as of the leaves of this 

 shrub, have been in common use from the days of the 

 American Indian, whose use of the plant led the settlers 

 to its employment. They also used the leaves as well 

 as the pounded bark in the making of a poultice for 

 topical use in inflammation. These domestic uses of 

 hamamelis led to its introduction to the medical pro- 

 fession at an early date. A mixture of hydrastis root 

 and hamamelis leaves was held in high repute by Pro- 

 fessor John King, M. D., (356), as a wash and as an 

 injection. The preparation known as "distilled hama- 

 melis," or "distilled extract of hamamelis," introduced 

 by Dr. Pond about the middle of the 19th century, 

 became very popular, and has an increasing demand at 

 the present time, a substitute being introduced into the 

 Pharmacopeia under the title "Hamamelis Water." 

 The writer is now engaged on a detailed study of 

 "Distilled Extract of Witch Hazel," not belonging in 

 this volume, concerning which he has collected much 

 interesting information, including its authoritative 

 early record. 



HEDEOMA (Pennyroyal) 



Not found in the U. S. P. of 1820, or in the 2d edition, in 1828, 

 but is named in both the New York and Philadelphia editions of 

 1830. Official in all editions thereafter until and including 1900. 

 Dropped from 1910 U. S. P. 



American pennyroyal, Hedeoma pulegioides, is a 

 fragrant herb native to America, and generally dis- 



