26 
small scattered irrigated patches, wheat is grown, the harvesting 
of which is very primitive. Grain in the straw is spread in a 
cleaning the grain. People who do not buy their flour obtain it 
by grinding this wheat in a bow]-shaped cavity in a hard wood 
log with a stone or wooden pestle. Occasionally one sees a stone 
mortar use 
s soon as my peon reported for duty the collection of cacti 
mit of the ces desieeee the highest of which reaches an 
altitude of about feet, were made, most of these cacti having 
range over the oe n, ales occurring in lesser quantities to the 
ong excursions across the plains and up various arroyos were 
made on horseback. A tour also was taken for a considerable 
distance down and along the dry stream bed of Rio Andalgala. 
Here a very pretty seen was found in very limited quan- 
tities on a small sand of reach of the torrential over- 
carrying however developed flowers about a month afterward, 
when a good photograph was obtained of it. Having packed 
the live plants and cuttings and all other material that required 
no further attention and shipped them to Buenos Aires, and 
e ba 
faithful peon, carrying a single change of clothing and a meager 
collecting outfit, as I did not expect to find many new cacti. In 
