Bigelow, Jacob, 1786-1879 / American medical botany, being a collection of the native medicinal plants of the United States, containing their botanical history and chemical analysis, and properties and uses in medicine, diet and the arts, with coloured engravings
Preface to the second volume, pp. [ix]-xvi ff.
PREFACE jT THE SECOND VOLUME. As frequent use is made in these pages of observations drawn from the auxiliary sciences, as affording some light on the medicinal properties of plants, it may be proper to examine how far tes- timony of this kind is entitled to receive credit in our inquiries and examinations. There can be no question, that the actual op. eration of medicines upon the human system, gathered from positive experience, is, in the pres- ent state of our knowledge, the only criterion by which we can pronounce, with universal certainty, on their properties. There are nevertheless many things to be learnt from chemical analysis, sensible qualities, and botanical affinity, which may afford us, in some instances certainty, and" in most others presumptive evidence of the medicinal characters of vegetables. The correspondence in these respects is frequently so striking, that we can hardly resist the belief, that an entire har- mony of properties exists, which, if we are unable 2 - - . I 'Ll I I
Based on the date of publication, this material is presumed to be in the public domain.| For information on re-use see: http://digital.library.wisc.edu/1711.dl/Copyright