92 
cage for the reception of cacti and bulky specimens of living 
lants. This was soon rigged and with all stores aboard we cast 
loose shortly after noon of the 14th for the journey of 300 miles 
to Yuma, the first stage of our trip. We arrived at Yuma on 
March 22, having been delayed a day in camp near the mouth of 
Bill Williams Fork by a rainstorm and a second day at Ehren- 
berg by a sandstorm. The extensive mesa east of the river in 
22. Expedition on bayou of Colorado River near Cibola, Arizona, Boats 
idaaee ‘write cacti. 
this locality is peculiarly subject to such storms, and the effects 
of the eroding action of the flying sand was noticeable on all of 
of the larger plants, particularly on the trunks of the giant cactus 
(Cereus gigantcus). These stops, as well as others made during 
the trip, made possible an examination of the lower hills, mesas 
and plains near the river and resulted in securing about sev- 
enty-five species of plants of which one-third were living cacti, 
