DESERTS OF THE UNITED STATES AND MEXICO 



711 



SAGUARO, OR GIANT CACTUS (Ccreus gigauteus) , NEAR MOUTH 01^ SAI^INA CANYON, 



SANTA CATAI.INA MOUNTAINS 



The openings in the trunk and branches lead to large sac-shaped cavities, originall> 

 excavated by woodpeckers for nests, and afterward occupied by several other species, as well 

 as colonies of honey-bees. This specimen is about 40 feet in height (see page 714). 



