t# itudl m 
and neuaureoeats 
%W' 
ing crab 
regarding life hist ory, growth and age 
of crabs oaa be obtained only if enough reliable measure* 
ateate are aacle# I wtioalwlf desirable art aoweureae&te 
of crabs before and after » j | g# If it should appear 
that an opportunity would bo afforded to mk® these latter 
obsermtleae a suitable lire bor or corral should be 
prepared# 
la general throughout the expedition all tagged crabs received 
and all crabs tagged should be measured (if only caragac< 
width but praferably according t© tom )• : '«Mrw» U ' 
should bo ta’ren to show eia© cross section of each catch. 
# f 
Ft# 
3* Studies cm abundance of "img crab# 
Tn cooperation with the *4#h«ry Kngiaesr aboard rive at* 
tent ion to abundance of crabs i 
different tinea of the year, 
various depths * 
{a) As taken by the several tyres of gear used. 
(d) ’ tew pots are us od, attention to effective baits 
an eh as fish* wood inpra.-paotof with fish oil* ate# 
4* ''tudles 011 food habits of King crabs# 
Infer mb ion 1® desired concerning ih* food habit? of crabs 
of different ages and sisea# Accordingly# the biologist 
invim at one© the staunch contents of as may 
waxy caught ewr'-.j a® is practicable# recording tbs 
observations on Fora • 
5# ;twti«i on the eavireassat of crabs. 
Obserrst ions end data mould b® recorded on: 
fr I CS@S§*# 
it) Food habits C firsts 4). 
Co) 'kspfchs found* 
(d) ;n«®iea of craba in hard shell staffs# soft stage# 
•ow*e*t r a iff «* si, mm a 1 1 os . 
Co) Associated fauna and flora# 
(f) K'uch hydro- Taphic data far -.‘.ay ba obtained rith 
K : |t hvrsd. 
6# Collection of aanploa# 
fa) The tRitbooaian lastttuit on hm eepplied a epeeiaan 
collecting outfit for each veaoel# hpeeiaoBs should 
bo 
it. i 
I m I - 
and 
- 
an«« **«» 
&@hs ;1 Ins tract 1 on® . 
k% 
in* 
be caved for embyyelagicel atndiea 
oval aaaai nsriee of crab m 
7# Test panels. 
Teat panels of carl oat material® I#®, sheet iron, glare-? t 
wood# concrete (one of m eh at s» station) should be pat 
-out in order to study growth rate of erganlfwo living an 
crabs# chiefly barnacle® , bryoae# hyd raids end warn tubes • 
Xnforaatleft from these panels way be of value ia detcrain* 
tug growth rate and frequency of moulting of crabs# 
