226 Miscellaneous tniellegence. 
quent about agar sae stan The shell is beautifully reseliies in 
shape. It has an oval or sub-spherical body with a constricted 
neck, and a recurved lip te the mouth. onan — of the — 
opposite the mouth is acute and often acu The animal 
contains no chlorophyl. One aos “measured rg of a a line ane by 
$ of a line broad ; another measured 4 = a Tine sea by + of a line 
a 
A Diffiugian, found in a spring on Da ee C valk . ee ng, 
nim 
be seen in all its te tails. The investment is atten and 
Il. MiscenLangeovus Sctentiric INTELLIGENCE. | 
Change of level in the Great Salt Lake.—On Tuesday, July 
21st, under the Bio asae of Dr. J. R. Park, of the Deseret Uni- 
eat 
wrote to ¥ sie ue on the subject, and requested that a fixed 
edubent Ss mi ht be placed in some convenient part of the lake, 
as = the past and present height of the water of the lake. 
common with all others who have given the subject any con- 
immense rain gauge, indi g from year to year the changes 
in the mean quantity of water that falls in the region constituting 
the basin of which it forms the botto The changes : 
n 
cated both by the depth of the water and the abr extent of 
ground over which it is spread. 
It is apparent to all persons sary ison with the meteorology of 
the reat geet that rainfall is a term of Ect, Sig aratively trivial 
import in this altitude. Except i in is Se autumn, when the waters 
are at low stage, no rains occur here etn uals affect the 
streams from which Salt L Lake derives its volume. The evapora- 
