220 
on collecting ae and for specialists in marine zoology 
to do likewise. The and waste from this lack of codperation 
is perhaps pry manifest in expensive and difficul 
dredging operations w the zodlogist working alone is likely to 
ie a seaweed” material of much scientific 
logical dredging in connection with the work of the Marine 
Biological Laboratory at Woods Hole and of the United States 
Bureau of Fisheries contributed much to the success of our 
recent work in Porto Rico 
We left New York on Tide 12 and reached San Juan on the 
Neurocarpus Justii were among the more interesting seaweeds 
that were being washed up on the beach at this time. 
June 17 was devoted in part to presenting our credentials to 
the government officials in San Juan, and on the 18th we went 
by rail, a day’s journey, to Ensenada, a town that has grown up 
uite unusual in scientific expeditions to the tropics. At the 
suggestion of Mr. W. V. D. Kitchin, electrical engineer of the 
