95 
With the information thus acquired the collection and ship- 
ment of material was begun in which the service of four laborers 
and a six-mule team were required. A fine Cereus sp. obtained 
near Torres is shown in Fig. 6, and a plant of the “ organ" cactus 
Fic. 14. A Yaqui Indian digging Cerews sp. near Torres, Sonora. This specimen 
is now in house No. 6 of the conservatories. 
Cereus Thurber’) is shown in Fig. 13, from which specimens were 
oS 
obtained 
Returning to Nogales two days were spent in shipping the 
specimens of living material which had been selected during the 
previous visit to the piace. Several species of yuccas and agaves 
were secured and a number of mammalarias, opuntias, as well as 
many shrubs native to this semi-arid region. 
