Department of Commerce 
BUREAU OF FISHERIES 
Pish and Wildlife Service 
technological Laboratory 
2725 . iontlake Boulevard 
Seattle , Washington 
July 9, 1941. 
Air Bail 
Dr. 'Waldo I. Schmitt, Curator, 
Division of Marine Invertebrates, 
Smithsonian Institution, 
United State , 
Washington, D. C. 
Dear Dr. Schmitt: 
This is with further reference to my latter of June 25. 
Wallace has returned to Seattle and has started work on the 
data collected, having brought back the data sheets for all three 
vessels up to the middle of June. It has been our impression you 
intimated that the measurements of the crabs should be presented 
in metric units. Inasmuch as the calipers measured in inches, 
Wallace has begun converting these measure - t 
We have a new calculating machine so this should not take a o,reat_ 
deal of time. In order to be consistent, would you suggest also 
that the weights of the crabs be converted to kilograms? 
Wallace and I have been studying 'arukama’s paper and within 
the next several days me expect to have a discussion of its con- 
ao: : will probably d slop so i furt - >ects to w] b 
consider desirable for inclusion in our report of the investiga- 
tion. le will be submitting this to you for your ideas. I would 
gather from iarukawa’s report that he has devoted the greatest 
part of- his attention to systematic study of the various species 
and various biological sects which we cannot hops to cover in 
a one— y i - 
ds send a lot on it as a background for some of the tilings that are 
c, I bell io) r biolo- 
ats do not coni’ i.- tg some of the observations of 
‘ukawa. I note that- Aarukawa places sore credence on his larvae 
sanplin- as an indication of abundance than he does on fishing re- 
sults, and that in carrying on his work with the cooperation of 
the established crab canning industry he has also ol t-mnen a very 
good return on his tagging work, thus permitting a nurther cne^ 
on the abundance of populations. Our data, of course, will e 
