TORTUGAS LABORATORY 1 
W. H. Longley, Executive Officer 
The Laboratory was open from June 1 to August 21, 1932, during which 
time the following investigators worked for the periods and upon the 
problems indicated. 
Paul Bartsch. U. S. National Museum. Cerion hybridization. August 
10 to 21. 
A. A. Boyden. Rutgers University. Serological study of invertebrate rela¬ 
tionships. June 1 to July 25. 
L. R. Cary. Princeton University. Invertebrate tissue culture. July 27 
to August 21. 
M. W. de Laubenfels. Pasadena Junior College. Physiology and taxonomy 
of sponges. June 15 to August 8. 
F. R. Hayes. Dalhousie University. Nitrogen in early echinoid ontogeny. 
June 1 to August 8. 
James L. Leitch. University of California. Water exchange of cells. June 
1 to July 11. 
Warren R. Lewis. Johns Hopkins University. The effect of selected 
indophenol dyes on fishes. June 15 to July 25. 
W. H. Longley. Goucher College. The habits and distribution of fishes. 
June 1 to August 21. 
H. W. Manter. University of Nebraska. Taxonomy and life-histories of 
trematoda. June 15 to August 8. 
Waldo L. Schmitt. U. S. National Museum. The bathymetric distribution 
of decapod Crustacea. June 15 to August 8. 
R. G. Stone. University of Missouri. The effect of radium radiation on 
* regeneration in Euratella. June 1 to August 8. 
John W. Wells. Cornell University. Reef corals. June 15 to August 8. 
0. L. Williams. University of California. Nematode parasites of fishes. 
June 1 to August 8. 
Shigeo Yamanouchi. University of Chicago. Life-histories of algae. June 
1 to July 11. 
During the season authorized repairs were made upon laboratory build¬ 
ings. Earlier the launch Velella was rebuilt as contemplated, again giving 
the Laboratory two serviceable boats of intermediate size for routine work 
of collecting or for transferring working parties from key to key within 
the group. The addition of 500 fathoms to the cable used in dredging 
from the Anton Dohrn makes it possible to operate in 600 fathoms, which 
is as great depth as she may explore while retaining Tortugas as her base. 
For details concerning the scientific work of the season, the reader is 
referred to investigators’ individual reports, to which the following may 
serve as an introduction. 
Dr. Bartsch has increased his plantings of cerions in mixed colonies with 
the idea of facilitating their crossing and increasing the material available 
for studying its effects. The work is of especial value in connection with 
his own studies of the local distribution and evolution of terrestrial mollusca 
of Cuba, other West Indian islands and the Philippines. 
1 Located at Tortugas, Florida. 
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