115 
is comparatively unknown and would enn’ yield large 
returns in undescribed endemic spec 
Respectfully eee. 
Wiciram A. Murri 
eee oe 
THE PRESERVATION OF PLANTS BY GEOLOGIC 
PROCESSES. 
In the Journal for April, 1900, may be found an parted on 
“ Tussock Formations,” aa ted by means of a v: of the 
depression or swamp with numerous tussocks of aes north 
Fic. 28. Tussocks in swamp, now bed of upper lake. 
of the Museum building, as it appeared previous to its flooding 
and conversion into a lake. This view is reproduced in Fig. 28. 
Some months ago, after several years of submersion, the water 
was almost entirely drained off, during the construction of the 
culvert at the eastern end, and a large part of the surface of the 
