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Fish and ildlife Service 
Technological Laboratory- 
2725 ontlake Boulevard 
Seattle, Washington 
February 11, 1941. 
MEMORAMJOMi for Hr. Hvatum, Biologist - vessel "Dorothy". 
In your capacity as biologist on the soring expedition of 
the Alaska Crab Investigation, you will be guided by the following 
general instructions: 
(1) Upon entering on duty and until you depart for Alaska 
you will assist Hr . Christey, Hr. Carlson and myself in making 
preparations for the departure of the expedition, you being re- 
sponsible for assembling and getting aboard the equipment, supplies 
etc., essential for your phase of the exploratory study. 
(2) Upon completion of the preliminary work in Seattle you 
will take part in the field work of the investigation, and will be 
responsible for the conduct of the biological phase of the 
activities of the vessel to which you have been assigned, adhering 
to the specific program and general instructions attached to this 
memorandum. 
(3) t'Jhen in the field you will be under the supervision of 
Hr. L. S. Christey who has been designated as head of the field 
party. 
(4) You shall cooperate with the gear expert aboard your 
vessel in every way possible in order that the maximum amount 
of information can be obtained. You shall also cooperate with 
the Fishery Engineer in preparing periodic experimental packs 
of crab meat according to the instructions supplied herein. 
(5) You will keep accurate daily records of biological 
observations, using the forms provided and report pertinent infor- 
mation periodically to Mr. Christey for transmission to this 
office. 
(6) Upon completion of the exploratory fishing you will 
complete the assembly of your data and submit a complete report 
of your work. 
(7) Amendments in addition to these instructions will be 
forwarded to you through Mr. Christey. 
Rill: vh 
R. W. Harrison, 
Technologist in Charge. 
