FERNS OF THE LAKE GrorGE Fuiora: I 85 
pody, locally called rock fern. Considerable fruitless 
search was made among such colonies for marked varia- 
tions in leaf form. 
Polystichum acrostichoides. | Comparatively  infre- 
quent. Many of the wooded slopes are apparently too 
damp for it. 
Pteridium aquilinum. Abundant on cleared neglected 
banks or competing with berry bushes. 
Brooxtuyn, N. Y. 
The Ferns of the Lake George Flora, New York 
I. 
STEWART H. BURNHAM 
The region covered by the so-called Lake George 
Flora includes the counties of Washington, Warren and 
Saratoga. Three additional records in the counties of 
Essex and Hamilton are also given. The altitude at 
Waterford and for some distance up the Hudson river 
is but 100 feet above the sea; also South Bay and lower 
Lake Champlain is 101 feet. Black Mt. on Lake George, 
2665 feet, is the highest land in Washington county. 
Crane Mt., 3254 feet, and Gore Mt., 3595 feet, are well 
known peaks in Warren county. Several other peaks 
in northwestern Warren county are over 3000 feet; 
but Gore Mt. is the highest land in the region. 
The rocks composing the mountains are largely of a 
granitic gneissoid nature. Chazy limestone, appearing 
in the vicinity of northwest Hartford, extends through 
the town of Kingsbury to Glens Falls, where it is known 
as Trenton limestone or black marble. Slates occur 
along the eastern side and in southern Washington 
county; also along the banks of the Hudson river from 
Glens Falls to Waterford and along the Mohawk river. 
Considerable sandy soil is found in Saratoga county 
and a few sandy tracts in Warren and Washington 
