Biss. 
While the storm of June 29th was the 
usual Summer storm of unusally high, 
though varying rates of rainfall, and 
probably more or less local in extent, 
and the storm of September 16th, with 
its high and varying rates of rainfall, 
swept up and off the coast in obedience 
to the laws that govern storms of cy- 
clonic origin and character, never 
touching the eastern end of Long Island, 
the storm of October 8th and 9th, pre- 
sented remarkable features, not found in 
either of the above, in regard to duration 
of rainfall, constancy of rate, and extent 
or area of influence. There was nothing 
local in the character of this storm. It 
extended over hundreds of square miles 
of territory throughout the middle sea- 
board states, and the rate of rainfall 
was remarkably constant, as shown by 
these copies of the records, as well as 
by the fact that it rained for 30 hours 
without ceasing. 
The rain began at 9 A. M., October 
8th, and ended at 3 Pp. M.,October 9th. 
Total time of fall, 30 hours. 
Total fall of rain, 9.83 inches. 
The highest rate during the storm 
was 2.0 inches per hour, for 9 minutes. 
The highest rate for any one hour 
during the storm Was 0.8 of an inch. 
Storms of this character are liable to 
cause floods at the lower levels of 
large, as well as small drainage dis- 
tricts. 
Some idea of the magnitude of this 
storm may be realized by considering 
the fact that the average annual 
rainfall in this rain belt, for the past 34 
years, was 43.15 inches, with the fact 
that nearly 23 per cent. of that annual 
average was precipitated in the 30 
hours of this storm. Finally, some idea 
of the dynamics of this storm may be 
obtained when we consider the fact that 
a rainfall of 9.83 inches means the de- 
positing of nearly 1,000 gross tons of 
water on each acre of surface on which 
that amount of rain falls. 
The writer is indebted to our fellow 
member, Mr. J. T. Fetherston for the 
analyses of the rain-gauge records and 
the copies of the same which are here— 
with presented. 
Dr. Arthur Hollick presented a con- 
tour chart of the basin of Silver Lake 
together with copies of analyses of the 
water, and read the following paper: 
SOME RECENTLY DISCOVERED FACTS 
IN REGARD TO SILVER LAKE. 
At our meeting of Oct. 10th, 1903, I 
gave an account of the depth and form 
of the Silver Lake basin, determined 
from measurements made in connection 
with condemnation proceedings for Silv- 
er Lake Park, and since then, by reason 
of the same proceedings, we have come 
into possession of some further interest- 
ing facts 
Borings were made, as indicated on 
the chart, at a number of stations 
around the edgeand in the bottom of the 
lake, in order to ascertain the charac-— 
acter of the surrounding and underly- 
ing strata. The deepest of these bor- 
ings wasin the lake bed, about 8 feet 
from the shore, on the east side, near 
the pavilion, where the following sect- 
ion was indicated: 
Station 1-b, East Side of Lake. 
Ice and water 8.00 ft 
Mud, largely organic Ar 
Fine sand, apparently silt Gags 
” 
Gravel.containing a small amount of clay 6.50 
Sand and clay 3:83, °7* 
Sand, containing a small amount ofclay 18.25 ,, 
48.58 "’ 
Hard rock was struck at this depth, 
probably a bowlder, as all the mater- 
ial below the mud and silt was found to 
be the typical red bowlder till, sand and 
gravel of which the surrounding shores 
are composed, derived for the most part 
from Triassic sandstone and shale. 
At the south end of the lake, in the 
far side of the morainal barrier near 
the outlet, (Station 4), ata point where 
the surface of the ground is about five 
