173 
We sailed from Balboa June 22, , and made our fet landing on 
John Ball stated at the time of his visit in about 1875 that he 
found 13 species of plants growing along the coast at that point; 
but I was able to find only 3, and these very scarce. The dis- 
mountains to Paita, which devour practically everything in their 
path. 
On June 26 a stop was made at Pacasmayo, also on the Peru- 
vian coast, where the town is at the mouth of a small strea 
th 
n 
e ever encroaching sand dunes which cross the valley an 
climb over the hills. One acacia plant which I saw, almost 
covered with sand, was about 100 feet in diameter. 
topped the next morning at Salaverry; but the dry plain 
and drier hills showed not a single green plant to entice the 
botanist away from the town. few algae were picked up on 
the rocks near the landing. 
On June 28 we arrived a Callao, the port of Lima, and the 
& 
to us, helping us to pass our baggage and starting us on our way 
t a. Throughout our South American tri 
we were in 
touch with this firm, which makes a specialty of looking after 
various trips, especially along the central railway of Peru. Col- 
lections were made at Santa Clara, Chosica, Matucana and at 
roya. We found the Cactaceae extended from the low hills 
near the coast up to about 4,200 meters’ altitude, but the greatest 
