BETWEEN NORTH BLOOMFIELD AND EUREKA. 407 
of Poorman’s Creek just below Shand’s. Some of the ridges, where bare of trees, are covered with 
a thick growth of manzanita chaparral. Seen from a little distance, the crest of such a ridge looks 
like a gently sloping smooth mass of rock without any vegetation at all. 
The road from Eureka to the Bowman dam has to cross the ridge between Poorman’s Creek and 
Caiion Creek, at the head of which the dam and reservoir are situated. The altitude of the highest 
point on the road I made to be 6,098 feet, and the thickness of the lava cap I estimated at from 
350 to 500 feet. 
Considerable search has been made at different times for beds of gravel under these lava ridges, 
in the belief that just those portions of the great lava-flow which now remain upon the ridges cor- 
respond to the position of the original depressions of the surface or old channels. About a mile 
and a quarter above Eureka, and to the left of the road to the dam, there was a small dump, at the 
mouth of a tunnel running towards the lava ridge which rises to the southeast. I made the altitude 
of the mouth of this tunnel to be 5,458 feet. ‘There were no signs of gravel on the dump. The 
tunnel had caved in and was inaccessible. I suppose it to be the one which had been described 
to me by the name of Griffith’s claim. 
I also heard of another tunnel which could be reached by following the road which leads down 
the south fork of Poorman’s Creek. My informant was Mr. W. C. Chase, who used to work in 
the tunnel. Mr. Chase is now in the employ of the Bloomfield Company, in charge of the Bowman 
dam. The tunnel was begun as far back as 1867, and has been worked at intervals since that 
time. It has penetrated nearly a thousand feet under the lava capping. It was run in a crumbly 
granitic bed-rock. The gravel found was in small quantities, filling the interstices between large 
crumbly granitic boulders. The quartz pebbles were seldom larger than a teacup. There was gold 
with the gravel, but not enough to pay expenses of working. The bed-rock appeared to pitch 
towards the centre of the ridge. A small amount of drifting was done, which proved to be un- 
profitable on account of the number and size of the boulders. 
The altitude of the porch of the house at the dam I made to be 5,393 feet, a number a little 
higher than that adopted by Mr. Hamilton Smith. According to the figures on Mr. Smith’s map, 
which I saw at Bowman’s, the altitudes of some of the more prominent points in this vicinity are 
as follows. I have given the position of some of the points with reference to United States section 
lines, or where these lines ought to be if the surveys were extended over the region. The town- 
ships I am not able to give. 
House at Bowman’s dam . : : : : - : : : ; , : . 5,360 feet. 
Top of dam . : ; é , - : : 4 ; 5,450 “ 
Lakes at head of South Fork e Casa Gree 
Shot-Gun Lake . , : : : : , ‘ : : : : ; a 0,410 oes 
Middle Lake ‘ ‘ : : ‘ : : : . ; ‘ : ; 6,460 “ 
Crooked Lake : 3 z 5 A r é A é ; : - - Gn07 3 
Round Lake F j $ - - : : : , . : : i 6,590 “ 
Island Lake . , : 3 Y : : . 6,690.45 
Fall Creek Mountain, 8S. W.} } of Ss. E. zt of Beatin a1. pee epee ae a 7,290 “ 
Grouse Ridge eee S. W. j of N. E. + of Section 34. : ‘ . ; ‘ er | ee 
Milton Dam, in Middle an River. 2 : : 2 A 2 : , , 5,670 « 
Jackson’s Ranch : : : : : : j ; : < , : ty DSTO. e 
Faucherie Reservoir, principally i ier Ge eCOn TS eg ww ow GOED 
English & e N.4 G 2 to aap eee 
Finlow Peak : : ; : ; : - ‘ ozo 
English Mountain, N. EB} } of N. E. t c secon 7 : : : : , : : a > | ll 
Eureka Lake (dam), principally in Sections 17 and 20 . : : : : 6,480 “ 
Meadow Lake, principally in E. 3 of Section 22 and N. W. t of Section SMa : ae i) 
Faucherie Mountain, near Section Corner x: aa a 7170 
The big dam at Bowman’s is just north of the half-mile stake between Sections 5 and 8. 
