SOCIÉTÉ SCIENTIFIQUE “ANTONIO ALZATE.”——MÉMOIRES, T. 32. 393 
DE MAGISTRAL DISTRICT, STATE 0P JALISCO, 
BY 
E, ORDOÑEZ, M. $, A. 
(Meeting of July 8, 1913). 
Magistral is a well known copper district, located a few 
miles to the South West of the town of Ameca, Jalisco, 
which is connected with the City of Guadalajara by a Branch 
of the National Railways of Mexico. 
Although the District has been known for a long time 
for its copper bearing veins, no large mines have been 
developed; however, small mines of varying importance and 
a great number of prospect pits are to be seen scattered 
throughout the supposed mineral territory. The first work 
done on these deposits was with the idea of obtaining, 
either through the weathering of the crude ore or of the ore 
previously roasted, the copper sulphate so commonly used 
in the treatment of silver ores in the patio process. These 
impure sulphates were called '“Magistral,” from which the 
name of the District has been derived. Itis said that “Ma: 
gistral” from this district was packed overland as far as 
Guanajuato. 
Although the outceroppings in the District, show fairly 
large quantities of iron oxides, they shów but very little 
Mem. Soc. Alzate. 'T, 32 (1911—1913).—50 
