Occasional Notes. 137 
mind that will calmly review the fa6ls of the case — that 
will look widely and note the causes that have led to the 
rapid development and the commercial prosperity of such 
districts as British Columbia, California, New Zealand, 
and the magnificent Australian Colonies, it will be evi- 
dent that there is nothing so calculated to rapidly popu- 
late, and add to the importance of, an undeveloped re- 
gion as the discovery of gold, in large quantities, within 
its boundaries. 
The genesis and distribution of Gold. — In connexion 
with the gold industry of the present, it may be interest- 
ing to remark Prof. Newberry's summary as to the 
genesis and distribution of gold, quoted by LOCK in his 
11 Gold." 
First. Gold exists in the oldest known rocks, and has been thence 
distributed through all strata derived from them. 
Second. In the metamorphosis of these derived rocks, it has been 
concentrated into segregated quartz veins by some process net yet 
understood. 
Third. It is a constituent of fissure-veins of all geological ages, where 
it has been deposited from hot chemical solutions, which have leached 
deeply -buried rocks of various kinds, gathering from them gold with 
other metallic minerals. 
Fourth. By the erosion of strata containing auriferous veins, segre- 
gated or fissure, gold has been accumulated by mechanical agents in 
placer deposits, economically the most important of all the sources of 
gold. 
Leaf-cutting Ants — Remedy. — I have heard occasion- 
ally of cases in country districts where it has been impossi- 
S 
