246 A. E. Verrill on new American Phyllopod Crustacea. 
tained specimens there during the present summer, but these 
have not yet come to hand. The water of Great Salt Lake 
has usually been described by travelers as destitute of all life, 
but according to Prof. Eaton it contains not only an abundance _ 
of Artemic, but also various other small animals, insect larve, — 
etc. The density of the water is stated at 1- 170°, "but doubtless 
varies much according to the season.* It yie elds, according to 
Dr. Gale, over 22 per cent of solid matter a while the Syracuse 
Saline, one of the richest natural brines in the United States, 
contains but 19°16 per cent.{ A few weeks ago Mr. Oscar Har- 
West Haven side, are hed large wooden tubs filled with water 
from various pools on the marsh, to be used in case of fire. 
By long exposure to the sun and air the water in these becomes 
concentrated and thus Pees suitable stations for the rapid 
increase of Artemie. On examining the tubs the first of Au- 
gust I found eight of them partly filled with water, in six 
which the Artemie were found in abundance, though more q 
numerous in one than in any of the others. In one tub, in — 
which the water had a decidedly milky appearance, they were 7 
so abundant that hundreds could be obtained in a few minutes. _ 
e water in some of the other tubs containing them was of a 
reddish or brownish hue, or about the color of weak tea. In 
two no Artemiz could be seen, and in these the water appeared 
pools from which the water had been taken, but no yee: a 
were found, though doubtless from these places the progenitors 
of those inhabiting the tubs must have been taken. It 1s pro- 
bable that in the pools they exist in very small numbers, being 
kept in check partly by various small fishes and other enemies — 
and partly by the unfavorable character of the water, while inthe — 
tubs the density of the water is more favorable for their rapid 4 
viene, and unfavorable or fatal to their enemies.§ The water — 
* The density of vag water of the Atlantic ocean is stated at 1-020; that of 2 
the Dead Sea 1-130 to 1-227. 
t This solid matter, scoorting to Dr. Gale, (this Journal, IL, vol. xvii, p. 129) 
has the following compositi 
Chlorid of sodium. amanes i 
RN OE No ie dee eee wee 
Chlorid of ela SF eee ean trace 
3 gd analyses of several of these brines, see Dana’s System of ll ’ a 
§ The d nsity of the water in two of the tubs containing most Artemia, woe } 
1-065, equivalent to bring containing 9-07 per cent of salt. One nod those testé be 
was brownish, the oth er milky. i 
