RICH SILVER REGIONS. 315 
Like most cyclopedias, this one was a 
little late in its information when printed, 
although it had an inkling of the truth in 
saying : “ The State of Sinaloa is said 
to be literally covered with silver mines. 
Scientific explorers who visited the 
Sinaloa mines in 1872 reported that those 
on the Pacific slope would be the great 
source of the supply of silver for the next 
century.” The fact is that the center of 
the greatest source of supply has moved 
even north of Sinaloa, to about the 
boundary line between the States of Chi¬ 
huahua and Sonora, and about one-third 
of the way from its southern end. Tak¬ 
ing either Batopilas or Urique as a base, 
and with a radius of 180 or 200 miles, 
that is, a diameter of 400 miles on them 
as a center, there is no doubt that the 
resulting circle will include the richest 
