I Mh< 
iiolooicaj. program 
% # pi Jr. « 4 
feil ,4 JLw» i 
Hi® following Biological ppognr. should 
is pra at i cable, an all vessels at all tl 
Wii 
edhernd to insofar as 
u 
• . tudiea on ©oveient and ©Ignition of lag crab* 
(a) Observations# 
Baeauae of the follow up schedule of the fishing vessels 
during the present expedition and the r©-*xa»l nation of 
aw*; red by feho first expedition cert.-.- In opportunity 
will be afforded for recapturing t m crabs. 
Bo cm th® lookout for crabs tagged or otherwise warded 
during the first expedition or daring the present trip 
and record all observations which say throw light on the 
nova&ent os* aigyattoa of Blag crab* 
(b) 
<4 
srasln# 
Co) 
For the above reasons it Is dasimbl® t’ at the biologist 
on each vessel ta? os aaay ©mbs m Is possible* Th« 
procedure to b® followed should be stellar to that used 
toy Dr* dlnltto during the first expedition.. A description 
is appended* ' ' : xp©rteont®t Ion with other ©ethoda of tag- 
ging are also r®C<» ended at ’.3r* .?ch»ttt*s rerueet • 
Marking crabs, 
Under the conditions of tb® present expedition all erabe 
not kept for apeetaea# will to# returned to the w-ter 
and will bo subject to recapture* accordingly, In order 
to ill . e eeelbtl 1 f of rotate lag btu ft crabs 
without kncwfled#®* all crabs not tag ted ©8 tinder (to) 
above ust be otherwise ©arkei to distinguish than f Tam 
crabs bein' : taught for tt» first tine# A suggested 
• clwAtt, f of 
the Elm crab * 
*f*mi * 
Camtschaticas 
inurru'Mnlf vntoty rijwnnn iiwti# n*.. - 
' r npf ■"■> > 
I* 
% wire and 
. ,„ t ^ , . . „ . yjo i fud 1 tf pt i i * i j^ n w ti w tw up waii i P ■ . •• 
tag as shown in Fig* 1 is uned* iMe wire is Inserted 
and twisted around underneath tfee carapace in stieh a 
my that it does ant interfere with the ©oath parte or 
the logs of the ©mb* The actual position of the wire 
la above* the bene of the lege* (Fig# 8). Bbs ends of 
the wire nr© twisted together at the posterior or baa 
end of th# ersto and. the tag te then secured wo 
string lag on the wire sad twisting the wire again to 
securely fasten the tag in place. (Fig* 3), 
£ Cdhd f t . 
rim 
M 1 
MM 
c. 
— iXi'r-i 
