va, oe ee 
322 A. LIVERSIDGE. 
Experiment 9—Similar to experiment 8 with a nucleus of 
native gold from Sandhurst (Bendigo). This showed a loss of 
0001 gramme. 
On incinerating the cork, cedar, &c., which had been used for 
reducing the gold, the residue retained the original form, but 
much shrunken and as has been observed by others, the micro- 
scopic structure of a cut section presents the appearance of 
burnished gold from the pressure of the knife. 
6 Nucleus. Reducing matter. es ne Tueleus. Difference) Number 
muclane! pee hal in gms. | of days. 
1| Nugget ...| dust from air ...| 3°4920 | 3:4900 | —-0020 168 
2|Gold foil... 95 op 15152 | 15110 | —-0042 168 
3 - oie Dee hae 1:1713 | 1:1675 |—-0038 | 168 
4 i ...| with cork ...| 11410 | 111410 | none 273 
5 5 ...| with filter paper} °8500 °8464 | —:0036 273 
16 ye .| phosphorus in 
ether Son BBO) "9326 | —:0004 273 
7| Gold in quartz} paper and wood | 1°7630 | 1°7609 | —:0021 58 
|8| Gold from ,, ip » | 28487 | 28474 |—-0013.| 58 
19 “9 » 99 ” "6574 °6573 | —:0001 58 
The above experiments all show that instead of the nucleus or 
nugget of gold increasing in weight and size in the presence of 
organic matter, there is a decrease which is just the reverse of the 
effects obtained by Wilkinson, Daintree, and others. 
The loss in weight of the nucleus may have been due to the 
removal of small quantities of impurity in the gold used asa 
nucleus, the native gold would of course contain silver and other 
impurities, but the gold foil was regarded as particularly pure by 
the late Dr. Leibius of the Sydney Mint, by whom it had been 
assayed. This will be the subject of further experiment, the point 
of chief interest at this stage is that the nuclei did not show any 
increase in weight. 
B.— With a Gold Nucleus and Inorganic Matter. 
Experiments from Nos. 10 to 49 form the third series, in which 
a galvanic couple was formed. y 
Ce 
