442 BOTANICAL GAZETTE [JUNE 
zone is driven outward by the advancing silt, and the latter 
interrupted altogether, despite the running stems of Euthamnia. 
Rowing around above the edge of the delta, and looking down 
through the transparent water, one can see colonies of Lobelia 
growing in the little hollows around the margin of the deposit. 
and analyses here show a considerably greater propor- 
Ee 
a 3. —Diagram of south end : 
Bed Long pon “i 
If the latter should advance, the 
fate of these colonies is easy to 
predict. 
fig. 4 is from a photograph 
taken from c¢, and including the 
shore line from dto ¢e. From dto 
& may be seen the sand beach, from 
6 to ea portion of the Euthamnia 
zone, which continues unbroken a 
kilometer or more from that point. 
Somewhat more advanced than 
that of Long pond is the stage of 
a pond near by. The latter is 
act ack as s Nips wad syns in the 
ey ti a footing is afforded for less anchored 
sa! the this region. Among recollections of the 
trying to. reach attractive patches 
ith ominous depths below. © 
e an oem < in the first 
Mey aR | Lod ee PLE RPM RE SY Ree IA SRNR RT Te EE Pe Ree Ne eS ee RES EGS REA MTR TE ee ee aT ae Re aN CE 
