SEA-FISHERIES LABORATORY. 2.65 
gathering, a vertical haul near the mouth of the bay, 
was also taken. 
The S.Y. “‘ Ladybird’’ was fitted out for the 
season towards the end of March, and her first plankton 
trip was on April 7th. From that date onwards to 
April 25th she was constantly engaged in this work, and 
obtained 107 gatherings on 13 working days. During 
April, then, we have the yacht’s gatherings out at sea, 
and the “‘ official’’ gatherings inside the bay, available 
for comparison. The same is true of the greater part of 
August and September, when the ‘‘ Ladybird’’ again 
took plankton gatherings, from August 8th to September 
17th inclusive (249 gatherings in 23 working days). 
For the rest of the year we have the “ official ”’ 
collections made in the bay. 
METHODS AND EQUIPMENT. 
In the main the methods of work were purposely 
the same as in the previous three years. The same 
localities at sea were visited (see map in last report), 
and the same series of nets were used—Hensen and 
Nansen vertical closing, surface and deeper horizontal 
nets with funnels, fine and coarse, two with otter boards, 
one on each side of the ship, and the large-meshed 
shear-net and yngel trawl. The Lucas sounding machine 
was found most useful, and the Ekman water-bottle, 
fitted with Richter reversing thermometers, was used in 
the deeper water. 
An addition to the oceanographical equipment of 
the yacht made this year was V. W. EKkman’s Current- 
meter, two views and an enlarged detail of which are 
given in fig. 1. It may be convenient for workers and 
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