On Laboratory Arts

by Richard Threlfall

1 gram of pure gold is converted into chloride — got acid free — i.e. to the state represented by AuCl₃, and dissolved in 120 cc. of water.

This solution is the equivalent of one containing 6.5 grains of trichloride to the ounce of water.

Solution II.

6 grams sodium hydrate.

100 grams water.

Solution III.

0.2 grams glucose (bought as pure).

12.6 cubic centimetres 95 per cent alcohol.

12.6 cubic centimetres water.

2.0 cubic centimetres aldehyde, sp. gr. 0.832.