APPENDIX. 
109 
pect Slough, through which they can reach the Big Lake, back of 
Clarksburg, and from there through inlets into the Sacramento again 
above the city of Sacramento. These sloughs and the Big Lake were 
pretty thoroughly fished during the bass run. Almost all the striped 
bass taken were very green and apparently not within several weeks 
cf their spawning time. According to those familiar with the region, 
the striped bass come into Prospect Slough late in May and in June— 
a sort of belated run—and spawn in the main slough, but this season 
this run did not appear. The run here was earlier this season than 
last and evidently continued on up the river. They were reported as 
being seen early in May as far up as Tehama. 
In the clear water of Prospect Slough the bass take the spoon readily, 
and this has become a popular fishing ground for those who enjoy the 
sport of catching the striped bass with rod and reel. The usual method 
is to troll behind a gasoline launch. Large numbers were taken this 
season in this mannerprobably more pounds of fish than were taken 
by nets in Cache Slough. 
If any future effort is to be made at hatching the striped bass, Cache 
Slough and its tributary, Prospect Slough, offer exceptional oppor¬ 
tunities of trapping and impounding the bass in their early run up 
these sloughs. Prospect Slough is much of it narrow and not so deep, 
but that impounding nets could be set for catching them on their way 
up the slough. There should be no great difficulty in trapping the 
bass and leading them into an inclosure or blind slough, of which there 
are several, for they are readily caught in the small winged fyke nets 
used by the “cat” fishermen. The shallow Big Lake would be an 
excellent place for setting impounding nets. If the bass can be 
impounded and not be handled, as is necessary with seines and gill nets, 
they ought to reach the spawning stage in confinement. 
N. B. SCOFIELD. 
NOTES ON SPAWNING AND HATCHING OF STRIPED BASS EGGS AT 
BOULDIN ISLAND HATCHERY* 
By N. B. Scofield and G. A. Coleman. 
Examination of Lot “A,” April 28, 1908, 6.30 p. m. to 9.00 p. m. 
Both female and male had been caught about two hours and were 
dead when eggs were taken. Eggs taken at wharf at 6.30 p. m., spawned 
in a new dry tin pan, the milt spurted over them, then carried to the 
hatchery (about thirty seconds in transportation), about a pint of 
filtered river water added, and the eggs gently agitated by tipping pan 
for about one minute, more water added, and the milt decanted. 
The milt from male was examined within five minutes after taking, 
but no movement of the spermatozoa was perceptible. The milt had 
