123 
North Sea Investigations. 
(Continued.) 
By 
Ernest W. L. Holt. 
Naturalist on Staff in Charge of Investigations. 
PAGE 
I. On the Destruction of Immature Fish in the North Sea c : . 123 
II. On the Iceland Traw] Fishery, with some Remarks on the History of the North 
Sea Trawling Grounds : . 5 - By 
I. On tHe Destrucrion or Immature FisH 1n tHE Nort Sza. 
Iyrropucrory.—Owing, to enforced idleness during the period 
which would otherwise have been devoted to preparing my reports 
for publication, | am under the necessity of reserving much of the 
information collected during the last four months for a future 
occasion, and of treating only in the briefest possible manner the 
few subjects selected for present discussion, I have again to 
express my obligations for much courtesy and assistance received 
from members of the Grimsby fishing community, and to the Marine 
Fisheries Society of the same town for cordial co-operation in the 
work carried on at their laboratory and aquarium at Cleethorpes. 
The subjoined remarks are continued from those which appeared 
in the last number of this Journal, and the subject is treated in the 
same manner. 
As I explained when endeavouring to compute the proportion to 
the total borne by the undersized fish recorded in the reports of last 
year, the method adopted by the Board of Trade statisticians in 
collecting their figures is not such as to inspire the most implicit 
confidence in the acctfracy of their results. Accordingly, since 
during the present season more time was available for statistical 
investigations, I have relied for my totals on the method previously 
adopted only in the case of small fish, viz. on observations based on 
the number of boxes landed on the Grimsby pontoon. In this work 
NEW SERIES.—VOL. III, NO. I, 10 
