31 



between the properties of vegetables and their 

 external form, we are surprised to find qualities 

 eminently febrifuge in the bark of trees belong- 

 ing to different genera, and even different fa- 

 milies # . Some of these barks so much resem- 



* It may be somewhat interesting to chemistry, physio- 

 logy, and descriptive botany, to consider under the same 

 point of view the plants, that have been employed in inter- 

 mittent fevers with different degrees of success. We find 

 among the rubiaceous plants, beside the cinchonas and ex- 

 ostemas, the coutarea speciosa, or Cayenne bark, the port- 

 landia grandiflora of the West Indies, another portlandia 

 discovered by Mr. Sesse at Mexico, the pinkneia pubescens 

 of the United States, the berry of the coffee tree, and per- 

 haps the macrocnemum corymbosum, and the guettarda 

 coccinea ; among the magnoliaceous, the tulip tree and the 

 magnolia glauca ; among the zanthoxylaceous, the cuspare of 

 Angustura, known in America under the name of Oronoko 

 bark, and the zanthoxylon caribaeum j among the leguminous, 

 the geoffrseas, the swietenia febrifuga, the aeschynomene 

 grandiflora, the caesalpinea bonducella ; among the caprifolia- 

 ceous, the cornus florida, and the cuspa of Cumana ; among 

 the rosaceous, the cerasus virginiana, and the geum urba- 

 num ; among the amentaceous, the willows, oaks, and birch 

 trees, of which the alcoholic tincture is used in Russia by 

 the common people, the populus tremuloides, &c. ; among 

 the annonaceous, the uvaria febrifuga, the fruit of which we 

 saw administered with success in the Missions of Spanish 

 Guiana ; among the simaroubaceous, the quassia amara, cele- 

 brated in the feverish plains of Surinam ; among the terebin- 

 thinaceous, the rhus glabrum ; among the euphorbaceous, the 

 croton cascarilla; among the composite, the eupatorium per- 

 foratum, the febrifuge qualities of which are known to the 

 savages of North America (Grindel's Chinasurrogat, Dorpat, 



