this work and also for his constructive criticism during the
preparation of this thesis.
It is with considerable satisfaction that I acknowledge
my gratitude to Dr. Kelshaw Bonham for advice,
criticism and
assistance with biological problems im the field,
and office,
to Dr.
laboratory
frequently sought and always willingly rendered;
Edward E.
Held for his support with the field work and
his counsel on many phases of the laboratory programs; to
Dr.
Ronald Eisler for his cooperation with the field collec-
tions and for his provision of analytical data from the 1958
collection; to Dr.
John Liston for his helpful criticism
during the preparation of the thesis; to William Anikouchine
for invaluable information on sedimentary processes in Rongelap
Lagoon;
and to Conrad Mahnken ,
James D. Kimmel,
and Katai Kalal
for their assistance with the 1959 field collection.