310 Catalogue of Botanical Specimens. 



cession, been rendered a permanent race: and as the species differ so 

 widely and uniformly in color, we may perhaps be warranted in regard- 

 ing them as distinct. The only certain mode of deciding whether this 

 is a true species or merely a variety, would be to ascertain if the opposite 

 sexes of these differently marked animals associate and breed together in 

 a state of nature. Where the produce of two animals, however different 

 in size and color, are in the constant habit of propagating their species in 

 a wild state, we are warranted in pronouncing them identical. Where, 

 on the contrary, there is no such result, we are compelled to come to an 

 opposite conclusion. 



[To be continued.] 



Art. XVTII. — Catalogue of Botanical Specimens collected by 

 J. WoLLE and A. L. Huebener, during the year 1837, in the 

 vicinity of Bethlehem' atid other parts of Northampton County, 

 Pennsylvania, in the order as they were found in bloom. 



Bethlehem, Nov. 2d, 1838. 



TO PROF. SILLIMAN. 



Dear Sir, — I take the liberty to transmit to you a Catalogue 

 of Botanical Specimens collected by my friends Jacob Wolle, 

 Esq. and Dr. A. L. Huebener of this place. Should it be desira- 

 ble to have any specimens, you will please address Dr. A. L. 

 Huebener, who is enabled to give any further information respect- 

 ing the locality, habits, &c. of the different plants. 



It gives me pleasure as Principal of the Seminary for Young 

 Ladies at this place, to contribute my mite to the extension of the 

 Science of Botany ; and to encourage my friends already urged 

 by every means in my power to prosecute their researches, in 

 hopes that many others may be induced to examine the Flora of 

 their own neighborhood with equal diligence. 



I am, dear sir, with sentiments of esteem, yours, 



Very respectfully, 



John G. Kujimer. 



April. 

 Symplocarpus foetidus. 

 Alnus serrulata. 

 Corylus Americana. 



Corylus rostrata. 

 Draba verna. 



Gnaphalium plantagineum. 

 Stellaria media. 



