investigations now in progress In the Bering Bea area have, or may 
obtain, all needed data of this sort. 
The suggested biological observations should be carried on so far aa 
possible at all times on all vessels and at such shore stations as may be 
established or continued* 
* * a # « • 
If no cannery is taken along, of course crabs caught in "fish trials”, 
by whatever means, will have to be marked or tagged before returning to water 
Between trawl hauls there is often an hour's Interval, sore or leas, 
'while set is being made, during which crabs could be marked, most members of 
the crew assisting. Marking may be accomplished by mans of strings or cords 
of different kinds or colors, quickly tied on some definite leg with square 
knot, or with a twist of wire (various colors of celluloid and numbered if 
desired) with tags already on wire. This could be very rapidly attached to 
1©£ (much faster than more permanent tags we have now been attaching to the 
abdomen. 
Marking might be even better or more rapidly done with some paint or 
ceaeat-like substance that could be brushed on carapace. This should be 
sea® liquid material that would be insoluable in sea water, and that would 
harden in water, or rapidly enough on the shell of the moist crab while on 
deck or at least stick to it for a couple of months. Black marine or copper 
paint generously brushed on the back of crab (carapace) would furnish a ready 
means of spotting those previously caught* 
Other suggestions welcomed. 
