MARINE COLLECTING. 39 
their investigations of the fauna of the Bay of Kiel. A pump 
was so arranged that the lower end of the pipe was within a 
few inches of the bottom, and the forms brought up by the 
current were col- 
lected by nets and 
sieves. | 
Between the bot- 
tom and surface 
other forms may be 
found ; to collect 
these a sunken net, (s 
first used by Baur, is 
y 
CTD > 
SQ 
PD PD bd 
S 
6) 
() 
9 
Ky 
} 
\ 
FOODIE 
employed. 
The surface of the 
sea at times Is Cov- 
ered with infusoria 
CNVectilica, ec.), 
jelly fishes, larval E- 
chinoderms, Worms 
and Crustacea, Cop- 
epoda, Salpz, Sa- 
gitte, etc. To ob- 
tain these the surface 
net is employed, 
fies oO Chis con- 
sists of a ring of 
Vic. 15. 
brass wire about a 
foot and a half in diameter, to which is attached a net of 
fine gauze. This is towed through the water, being frequently 
