Circular No. 66, U. S. Dept. of Agriculture 



Plate 7 



A. — One way of extracting the edible pulp from the fruits of tuna cardona (Opuntia strcptacantha). 

 State of Zacatecas, Mexico, 1905. B.— A young prickly pear orchard in its second year's growth. 

 San Luis Potosi, Mexico, 1909 



