SEA-FISHERIES LABORATORY. 323 
actual numbers, showing that when the plankton is the 
same the nets we use show this. Again the shear net 
eaught most of the fish eves and nearly all the young 
fiche. (320 Clupecid and 10 Gadoid), | 
The adjoining table, which gives certain hauls taken 
from Forms 25, 26 and 30, shows a comparison between 
Station I and Station IT on April 22nd, and the surface 
nets in the bay on April 24th. This comparison brings 
out the fact, seen also on other forms, that the surface 
plankton is often more abundant in the bay than at the 
offshore Stations. In this case it gives fully as large a 
haul as the “ weight’ net at Station II, and about four 
times as much as the average of the four surface 
gatherings taken in the open sea. 
It will be noticed that in the bay, while Diatoms are 
abundant, Dinoflagellata are entirely absent; at Station I 
they are present to the number of a few hundreds of each 
species in each net; while at Station II most of the nets 
have a thousand or two of each species. The Diatoms are 
less abundant at Station I than at Station II, and much 
less abundant at both offshore Stations than in the bay. 
The “weight” net has not more Dinoflagellata and not 
more Diatoms than one of the surface nets, and the greater 
bulk of its gathering is due to larger organisms, such as 
Sagitta, Copepoda and larval Lamellibranchs. There 
were on this occasion no fish eggs except Rockling in the 
bay. 
“ PLANKTON-ROHRE.”’ 
With the view of ascertaining whether there was 
much regularity in the catch obtained from a very small 
quantity of water collected continuously over a 
wide extent of sea, a German Plankton-Roéhre (Apstein’s) 
was obtained, late in August, from Zwickert’s at 
