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PHARMACAL PLANTS AND THEIR CULTURE. 
CHAPTER II. 
LITERATURE ON DRUG PLANTS AND DRUG PLANT CULTURE. 
In lieu of records and data from California experimental gardens 
devoted to medicinal plants, we hereby submit the more important 
citations to the literature treating of the occurrence, distribution, use 
and cultivation of medicinal plants, especially those found in the State 
of California. While some citations to the chemical investigations of 
drug plants are given, no attempt has been made toward completeness 
in that direction. Such citations would be of inestimable value to 
investigators and it is hoped that some one may have the time and 
the opportunity to complete such a task. 
It was thought desirable to include a few citations, which do not 
refer to medicinal plant culture directly. There is, for example, an 
extensive literature on fertility of soil, chemistry of soil, seed testing 
and selecting, plant physiology, tilling of soil, etc., which is of more 
or less importance to those who desire to enter upon the more intelli- 
gent consideration of drug-plant culture. In some instances the publi- 
cations are abstracted very briefly : others are not abstracted, as the 
title is sufficient to indicate the nature of the subject-matter. After 
consulting the literature here cited, those interested will no doubt be 
able to obtain additional literature and to secure, through other sources, 
additional desirable and necessary information. The Department of 
Agriculture at Washington, the California State Horticultural Society, 
the College of Agriculture of the University of California, the various 
California state, county and local promotion and development com- 
mittees, and the boards of trade of towns and cities are willing and ready 
to give information in so far as it is possible. 
Most of the special information, such as range and distribution, 
morphology, etc., regarding California medicinal plants, will be found 
in the special California publications, as Pacific Pharmacist, Zoe, 
Erytiiraea, Pittonia, the Proceedings of the Academy of Sciences, 
the Geological and Railway Exploration Reports, the Ethnolog- 
ical Reports and Government Expedition Reports. These may be 
consulted in the various libraries of the State, as at Sacramento, State 
University of California, Leland Stanford University, and at the Cali- 
fornia Academy of Sciences. There are also various California floras, 
written by well-known botanists, as Jepson, Coulter, Behr, Watson and 
others, which may be consulted by those interested. It will also be 
found that the literature on the introduced medicinal plants of Cali- 
