On the Occurrence und Distribution of Gold im India. 537 
states that gold is never found in the streams traversing them. 
Again, the natives, so far as my experience goes, do not wash in the 
sands, &c., lying on the metamorphic rocks, although they do not 
connect the existence of gold in the sands with the vicinity of any par- 
ticular rock. 
“In Manbhtm, the experience of generations of washers has enabled 
them to define the boundaries within which washing is remunerative ; and 
this boundary, it is interesting to observe, corresponds on the north 
exactly with that of the sub-metamorphic rocks.* This coincidence | 
ascertained in the following manner. On my arrival at Dulmi (which 
is situated on the faulted boundary of these two groups of rocks) when 
marching northwards from the lower part of Patkum, the gold-washer 
asked to be allowed to return to his own country (Dhalbhtim), stating 
that none of his race ever went north of Dulmi. I induced him how- 
ever to stop, and while we remained north of the fault the washings were 
carried on in the granitic gneiss area with comparatively poor, but not 
exactly barren, results. On the day I crossed the fault south of 
Sindaree, when returning southwards, the gold-washer said that we 
should after that find gold more regularly and in greater quantities 
than we had done since we came north at Dulini. 
* During the whole time, a record was kept of the daily results and 
of the nature of the rocks in which the washings were made. The 
following abstract will suffice for comparison of the productiveness of 
the two formations :— 
SUB-METAMORPHICS. 
— | Jan. Feb. | March.| April. | Total. 
Number of days on which 
washings were made, . | 31 9 18 8 66. 
Unsuccessful days, aii 3 2 2 9=13°6 per cent. 
Gold in grains, . . | 17°68 | 4°65 7°6 | 2:45 | 32-38. 
Daily average in grains, ‘57 | *516 “4 ‘3 | Daily average for whole period 
32°38 
= aE = 4 grains. 
METAMORPHICS. 
— | Jan. | Feb. | March. | April. Total. 
Number of days on which 
washings were made, . = | 20 13 — | 383. 
Unsuccessful days, - | 138 9 — | 22—66 per cent. 
Total gold in grains, - 4°78 7 — | 5:48. 
Daily average, ~ 23 05 - | Daily average for whole period 
5°48 
= 33> 16. 
* A line drawn across the southern part of Manbhum from Simlapal on the east 
through Burrabazar to a little north of Echagurh on the west, roughly indicates the posi- 
tion of the line of boundary between the two formations. 
