30 striking about north 25 degrees east and dipping 70 degrees northwest across a band 400 feet wide. There are also in this band a few narrow veins of the diagonal type. Near this vein zone are two or more beds of limestone, one of which has been extensively replaced by quartz. MAMMOTH CLAIM AND WILLIAMS CREEK SOUTH OF BLACK JACK GULCH An open-cut on the southern bank of Black Jack gulch on the Mammoth claim exposes three quartz veins in fissile grey quartzite of the Lowhee member. One is a transverse vein 6 feet wide striking north 30 degrees east and dipping 70 degrees southeast. Another is 24 feet wide, strikes south 15 degrees east, and is vertical. Joining these two is a third vein 2 feet wide and about 30 feet long striking north 70 degrees east. The veins do not show much pyrite but the transverse vein in particular has many pits formerly occupied by pyrite cubes. Bed veins are exposed in the northwest corner of the Bonita claim. A bed vein is exposed in an open-cut west of Williams creek on the Westport claim. Bed veins and transverse veinlets, both mineralized with pyrite, occur east of Williams creek on the Mammoth claim. There are several veins of the bed and transverse types near Williams creek on the Royal Oak and Pilot claims. A short distance below Walker gulch the sediments have been partly replaced by thin seams of pyrite on the Cornish and Mint claims. There are also quartz veins in the vicinity. A quartz vein opposite the mouth of Walker gulch on the Mint claim strikes about south 60 degrees east and appears to be vertical. It is at least 2 feet wide and is well mineralized with pyrite and some arsenopyrite and chalcopyrite. This is apparently the Steadman ledge of old reports. Argillites of the Basal mem- ber underlie much of Williams creek south of Walker guleh and quartz veins are few. CARIBOO-AMALGAMATED GOLD MINES, LIMITED The Cariboo Amalgamated Gold Mines, Limited, has holdings in vari- ous parts of Cariboo district. In 1933 the company drove an adit to explore holdings a mile south of Barkerville. The adit is 900 feet long and was driven east-southeast, beginning on the Alder fraction and extending into the Liberty claim through rocks of the Lowhee member. The adit cuts a few veins, one of which is a bed vein 2 to 6 feet wide containing some pyrite. It cuts also a diabase dyke assumed to be of Mesozoic age. The objective of the adit was surface showings farther southeast on the Liberty and Free Gold claims. There are several open-cuts exposing veins on the Free Gold claim. The cuts are somewhat caved and the veins are poorly exposed. These are apparently the same open-cuts that were visited by Uglow and were then included in the Victory claim. He states that veins on the Victory claim were mineralized with pyrite, arsenopyrite, and galena, and contained high values in gold.1 : 1 Johnston, W. A., and Uglow, W. L.: “Placer and Vein Gold Deposits of Barkerville, Cariboo District, B.C.”; Geol. Surv., Canada, Mem. 149, pp. 196-205 (1926). (