962 THE JOURNAL OF GEOLOGY. 
actively prosecuted. On Turn-again arm at the head of Cook’s 
Inlet, where Cook was turned back from his effort to find a 
‘northwest passage,” stream gravels are being worked. The 
only success was on Bear Creek, for some two miles, and I 
could not ascertain that the average results there were more than 
about $5.00 a manaday. I learn from Captain Hansen, of the 
mail steamer Dora, that richer gravel was discovered after I had 
left Cook’s Inlet, near the head of Turn-again arm. 
The island of Unga is in the Shumagin archipelago, about 
1000 miles a little south of West from Sitka. Near Delaroff 
Bay, on this island, is the Apollo Consolidated mine, a highly 
interesting and an important deposit, which is ‘now yielding at 
the rate of over $300,000 a year. The country rock is andesite, 
and the deposit occupies interstitial spaces in a crushed zone of 
this rock. The ore averages between $8.00 and $9.00 per ton, 
and a very large part of the gold is free, though heavy bunches 
of sulphurets are of frequent occurrence in it. This district, in 
which ore has been found at many points, bears a striking resem- - 
blance to Bodie, Cal. 
On the island of Oonalaska auriferous quartz has been found, 
but thus far nothing like a mine has been discovered. 
I was accompanied to the Alaskan coast, during the past 
summer, by Messrs. Wm. H. Dall and C. W. Purington. Mr. 
Dall took charge of the coal deposits and I of the gold. Our 
report is naturally not ready, but is expected to appear in the 
spring. Geo. F. BECKER. 
