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the designation number of the parent snail in order to correlate
hatching with Xeray dose,
Further spawning filled in the spaces bat-
wean egg masses rendering identification dubious.
Difficulty is being
encountered in providing sufficient seration with the pump available.
Weekly census of the snails is contiming,
-
During the month the Applied Fisheries Laboratory was visited by
Dr. Simeon T.. Cantrill, Swedish Hospital, Seattle, Washington,
Dr. Le Re Donaldson made a trip to Richland, Washington for conference
April 27, 1948, with Dr. Shields Warren, Dr. Herbert Parker, Dr. 8. Cantrili,
Dr. Failla, Mr. C. Shugg, Mr. Shaw, Mr. R. Hageman, i. W. K. Grane, Mr. Iawis,
-
.
.
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and ur. Harris; and to visit the laboratory in the 100-F area,
Dh cg Co
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Lauren R.. Donaldson, Director dm te,
of Contract No.W-28-094-eng=33