360 A. LIVERSIDGE. 
They were dissolved in nitric acid (one to three parts water) free 
from hydrochloric acid; a few drops of hydrochloric acid were 
afterwards added to precipitate the silver, allowed to stand, then 
filtered, and the residue scorified with 500 grains of granulated 
lead and cupelled. 
No. 1. Richmond River.—Placed on back of fifth pile in middle 
row from eastern end of twenty ton crane wharf, south training 
wall, Ballina, Richmond River. Fixed 1st November, 1893; in 
salt-water. 
The assay of the new metal gave— 
Silver Gold. 
1000 grains gave 5 oz. 1 dwt. 6 grs. 11-8 grs. per ton. 
1000 39 4 9 19 ”? 11 ” 4 re 
The trial sheet No. 1 after exposure at Ballina, as above, from 
November 11th, 1893 to September 30th, 1895. or about twenty- 
months gave the following results— 
Scale—Consisted mainly of organic matter, 211 grains gave 
neither gold or silver. 
Metal—Dissolved in sulphuric acid gave— 
Stlver—4 oz. 17 dwt. 19 grs. per ton. Gold contained platinum. 
No. la. Moruya.—Placed on the pillar pile of the crane at the 
town wharf, say five miles from the heads. Fixed J 1th November, 
1893; in salt water. 
No. la. Moruya. The plate was taken off in October, 1895, 
after being exposed to the sea-water for twenty-three months, and 
on assaying, it yielded the following results. Four assays were 
made, 1000 grains being taken ; two of these were first treated 
with sulphuric acid and the other two with nitric acid, and the 
residues scorified and cupelled separately. 
By sulphuric acid, mean of two assays— 
Silver. Gold. 
5 oz. 0 dwt. 11-5 grs. 1 dwt. 1°8 grs. per 
By nitric acid, mean of two assaysS— 
4 oz. 8 dwt. 5:5 grs. Le te ” 
