246 
GUIDEBOOK OF THE WESTERN UNITED STATES. 
the mouth of Parleys Canyon, so named in honor of Parley P. Pratt, 
the leader of the “ First Immigration,” or handcart companies. 
In 
crossing the valley the traveler may obtain a good idea of its pro- 
ductiveness, for here he sees all kinds of agricultural activities— 
truck gardening, fruit growing, and live-stock raising. The area 
passed through is largely suburban, with comfortable bungalows 
embowered in shade. 
Just beyond the station of Sugar House is 
the State penitentiary, on the left. 
rom time to time in passing across this low land the traveler can 
see the terraces back of the city, the State Capitol, the University of 
below that of 1850. The level of 1914 
s 6 feet above that for 1905 
“The land bordering the lake has 
in many places a slope so gentle that 
a small change in the height of the 
water surface makes a great change 
in the area of the lake. ma 
interval between the two surveys the 
lake had risen 10 feet and this rise 
lating the size of the lake. The effect 
of a long series of wet years is some- 
what reduced by the resulting increase 
of evaporation surface, and the effect 
of a series of dry years is lessened by 
the ager reduction of surface ex- 
to evaporation. This natural 
and ihe control limits the range 
of oscillation and gives a certain per- 
nence to what may be called a nor- 
mal or average level. A change in 
the normal can occur only when some 
new factor is introduced. 
“Both man and nature have intro- 
duced chan in ormal level. 
The occupation of the surrounding 
n by white men has r ly 
ecen 
modified the face of the land in ways 
that have a recognized influence on 
the water level; and the ancient his- 
tory of the lake includes enormous 
pial in response to changes 
of clim 
*OF ae influences the most tell- 
liz 
is lost to the lake. With i gradual 
enlargement of the irrigated area the 
normal level of the lake is inevitably 
ngineers are al- 
ion there is a limit to the possi- 
saet of ieee 
“The fresh water brought by the 
rivers mingles gradually with the 
brine, and as the river mouths are on 
or near the eastern shore the brine is 
not so strong at the east as at the 
west. nalyses of samples of the 
brine gathered at different points and 
in different years report the dissolved 
solids as from 13.7 to 27.7 per cent by 
per — — than that of fresh 
water. 
‘*The brine is pene in the north- 
eastern arm, This arm has 
been partitioned from the main body 
