UNITED STATES, 



The dyeing plants of the United States are na - 

 merous and very important. We abound in yellow 

 dyes of the first quality, of these we have first, the 

 quercitron oak, already described under the article 

 oak ; the colour produced by it is of unrivalled beauty : 

 the exportation of the powdered bark is regular and 

 considerable. Its qualities as a dye have been largely 

 treated of by Dr. Bancroft, in his " Philosophy of 

 Permanent Colours.''. 



To prepare it for the dyer, the epidermis is shaved 

 off, and then it is ground in a mill. It separates 

 partly into stringy filaments, and partly into a fine 

 light powder. Both of these contain colouring mat- 

 ter, and therefore are to be employed ; but as they 

 contain unequal quantities, they should be used in. 

 their natural proportions. The stringy parts yield 

 only half as much colour as the powder.* 



2. Isatis or woad, abounds in the western counties 

 of Pennsylvania ; where, according to the report of 

 an experienced native of Britain, five crops are an- 

 nually produced, instead of two crops which that 

 plant yields in England ; the farina is also stated to 

 be much richer here than in England. 



3. The root of the Hydrastis Canadensis affords 

 a fine yellow dye, and is constantly employed by the 

 Indians for that purpose. 



4. The Hypericum perforatum^ a species of St. 

 John's wort, is found in Pennsylvania, and requires 

 little trouble in the propagation. 



5. The coreopsis lanceolata of the southern states 



* The manufactory of this powdejr is extensively carried flinby Mt.^ 

 Bender, of Philadelphia. 



