48 ‘Lwo-Headed Snakes. 
This plant is now known to be the Carex, No. 46, Muh. 
Gram. The resemblance of that plant to C. castanea, Wahl. 
no. 90, was remarked by Muh., and is true also of ours, yet 
as he considers the C. flexilis, Rudge, found in Newfound- 
land, the same as C. castanea, Wahl., which the descriptions 
of the two plants seem clearly to authorize, there can be no 
doubt that ours is a very different plant. Its name is in 
honour of one of our distinguished botanists. The C. Tor- 
reyana, Schw., it should be remarked, is a very different 
plant, being only a variety of C. retrorsa, Schw. 
Remark 2. By comparing a specimen of C. aurea, Nutt. 
with C. pyriforms, Schw. described Vol IX. p. 69, it is 
evident that they are the same species. Mr. Nuttall has in- 
deed placed C. aurea among those species which have three 
stigmas ; but it has always two only, in the numerous locali- 
ties in New-England, in the state of N. ¥., and at Niagara 
Falls in Canada. It belongs to another subdivision. 
ZOOLOGY. 
Art. VI.—Fuacts and considerations showing that the Two- 
Headed Snakes of North America and other parts of the 
world, are not individuals of a distinct race, but universally 
monsters. Ina letter from Dr. Samurt L. Mrrcutte, of 
New-York, to Dr. Gedman of Philadelphia. 
Tun two-headed serpent has long been an object of admira- 
tion and research. The rarity of its occurrence has added 
interest to the inquiry. It has, however, been found in so 
many, and such distant places, that several authors have 
been induced to make delineations, and various collectors te 
procure specimens. 
The production to which I allude is not the Amph’sbena 
of hot climates, erroneously alleged to have a head at each 
extremity of the body, with the capacity of moving both 
ways, as its name imports, at will. ‘The one] possess from 
