Zoogeographical Investigations in Southern Greenland. 355 
actual depth fished to be = about half the length of wire out. The dia- 
meter of the Nansen-net was 50 cm., that of the ringtrawl 1 m. 
In the Kvanefjord, the Nansen-net was only used once, as was 
also the ringtrawl; we dared not have them out oftener, owing to the 
quantities of fjord ice about. 
In Bredefjord, the Nansen-net was used at the mouth (St. 30), 
in the central portion (St. 63) and at the base of the fjord (St. 94). 
By way of comparison with St. 30 (at the mouth of the fjord) the 
following ringtrawl hauls were made: 
St. 50, 100 m. w.; St. 51, 200 m. w.; St. 52 and 59, 300 m. w.; St. 35, 
400 m. w.; St. 48 and 60, 500 m. w.; St. 47, 600 m. w.; St. 31, 700 m.w.; 
St. 129, 800 m. w.; St. 122, 900 m. w. 
For comparison with St. 63 (the central portion of the fjord) the 
following hauls were made with the ringtrawl: 
St. 86, 100 m. w.; St. 84, 200 m. w.; St. 73, 300 m. w.; St. 72, 400 
m. w.; St. 65, 500 m. w.; St. 64, 600 m. w.; 5%. 128, 700 m. w.; St. 126, 
800 m. w. 
And for comparison with the work of the Nansen-net at the base 
of the fjord, (St. 94) the ringtrawl was called into play as follows: 
St. 106, 100 m. w.; St. 107, 200 m. w.; St. 108, 300 m. w.; St. 102, 
400 m. w.; St. 100, 500 m. w.; St. 133, 600 m. w.; St. 132, 700 m. w.; 
St. 131, 800 m. w. 
In Bredefjord Sermilik the Nansen-net was not used at all, 
and the ringtrawl only twice, with 400 m. w. (St. 119) and 500 m. w. 
(St. 118). 
In Skovfjord, the Nansen-net was used at St. 137 (the extreme 
innermost portion) and at St. 154 (at the mouth); the ringtrawl however, 
was only used 3 times (St. 148—150, with 300, 200 and 100 m. w.). 
In Tunugdliarfik (Eriksfjord) no plankton work was done. 
With regard to the method of dealing with the contents of the 
ring trawl, vide supra p. 236. 
In the list of ringtrawl hauls given below, the number of individuals 
of each species has been calculated from a sample drawn from the whole; 
1.е. where one-tenth of the total yield from one station was examined, 
the resultant figures were multiplied by ten, giving the figure shown in 
the list. 
Plankton character forms. 
1. Ringtrawl. 
In order to render the figures for all stations comparable one with 
another, all have been reckoned as for the same duration of haul, viz. 
20 min. excl. paying out and hauling in. 
The percentage for the two Calanus species denotes their ratio of 
each to each, not to the total yield including other Crustacea. 
23% 
