vi 3 PREFACE. 
ed, which might require the first insertion for 
plants not yet obtained or imperfectly examined. 
A systematic method may be adhered to in a work 
which is furnished for the press at onee, but must . 
occasion delay and imperfection in a periodical one. 
As the American Medical Botany is terminat- 
ed by the completion of its third volume, the 
opportunity is now afforded for taking a methodi- 
cal view of its contents. Considered in a medici- 
nal point of view, the subjects will be best classed 
as in systems of Materia Medica, by a reference 
to their leading properties or most striking modes 
of operating on the human system., In this 
light they may be arranged as follows. 
Narcotics. Tonics. 
Datura Stramonium, Menyanthes trifoliata, 
Conium maculatum, Humulus Lupuius, 
Cicuta maculata, Eupatorium perfoliatum, — 
Hyoscyamus niger, Coptis trifolia, 
Nicotiana tabacum, -—=SCorntuss florida, 
_ Solanum dulcamara, Gentiana Catesbeei, 
Kalmia latifolia? Aletris farinosa, 
| Polygala rubella, ~ 
‘Astringents. Sabbatia angularis, 
Geranium maculatum, | Prinos verticillatus, ~ 
~ Statice Caroliniana, Liriodendron tulipifera, 
Arbutus Uva ursi, — Magnolia glauca. 
- Rubus villosus, : Acrid stimulants. 
Rhododendron maximum, _ Arum triphyllum, 
Nympheea odorata, Ictodes feetidus, 
Mpyrica cerifera. ~~ Ranunculus bulbosus. 
