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treated in this report of the indigenous medicinal plants of Massa- 

 chusetts, with the names of my authorities under the head of the 

 articles treated of, I have preferred to group the principal part of 

 them together in these remarks, without regard to names, to time 

 and dates. I may here observe, that I have very briefly noticed 

 more than three hundred medicinal indigenous plants found growing 

 in Massachusetts, which is as far as I have been able, at present, to 

 investigate them. My list is, undoubtedly, very imperfect. Many 

 more may be known which have escaped my notice. The list of 

 valuable articles is increasing, and many years will not elapse be- 

 fore a perfect account will be obtained of them. Many of them, of 

 which I have spoken, will, probably, be considered inert ; and others 

 will be deemed more valuable than they have been described to 

 be. I have not treated of any article without some authority. 

 Probably as many naturalized medicinal plants are to be found in 

 Massachusetts, as indigenous. If so, our vegetable materia medica 

 is rich, and will well repay further and deeper investigation. Had 

 the Committee been called upon by the Association to investigate 

 our exotic, as well as indigenous plants, my list of references to 

 authorities would have been altogether greater. As it is, I shall 

 mention only a few of those from whom I have received most im- 

 portant information. I have availed myself, among other works, of 

 the knowledge communicated upon the subject, by Rees's Cyclo- 

 pedia, Encyclopedia Britannica, the new Edinburgh Encyclopedia, 

 Willich's, the Encyclopedia Americana, Nicholson's, and the Cyclo- 

 pedia of Practical Medicine, as far as published; of Michaux, 

 Bartram, Weld, Flint, Drake, Peck, Darby, Schoolcraft, Morse, 

 Godman, Wilson, Audubon, Carver, Pursh, Muhlenberg, Elliott, 

 and many other writers upon our Southern and Western States, and 

 travellers in those regions ; of Catesby, Clayton, Kalm, Bobbins, 

 Charlevoix, and other celebrated travellers in America; all of 

 whom have spoken, more or less, of our plants. To Silliman's 

 Journal, the American Philosophical Transactions, the Transactions 

 of the Academy of Arts and Sciences, of the Phil. Academy of Na- 

 tural Sciences, the Journal of Pharmacy, B. S. Barton's Medical and 

 Physical Journal, Barton's Elements of Vegetable Materia Medica, 

 his Medical Botany, his Flora, &c., both with splendid coloured 

 plates, Coxe's Medical Museum, Coxe's Dispensatory, the Philadelphia 

 Medical Recorder, the American Journal of the Medical Sciences, the 

 Philadelphia Medical Examiner, Carson's (splendid) Medical Botany, 

 with elegant coloured engravings, Griffith's Medical Botany, Rafi- 



