TWENTY-FOURTH ANNUAL REPORT. 
TO THE RIGHT HONOURABLE 
20 ON wad EIN CG Auk Rosy ML. Re 
His Majesty's Secretary for Scotland. 
Orrice oF THE FisHeRy Boarp 
FOR SCOTLAND, 
EpinsureHd, 30th August 1906. 
Sir, 
In continuation of our Twenty-fourth Annual Report, 
we have the honour to submit— 
~ PART III.—SCIENTIFIC INVESTIGATIONS. 
GENERAL STATEMENT. 
This, the third part of the Twenty-fourth Annual Report, deals 
with the scientific investigations conducted by the Board in 1905, 
so far as they have been completed, by means of the Parliamentary 
Vote granted for the purpose. 
The scientific work has, as usual, been carried out under the 
supervision of Dr. T. Wemyss Fulton, the Scientific Superintendent 
under the Board, the researches having been for the most part 
undertaken at the Marine Laboratory at Aberdeen, in the Moray 
Firth, and the Firth of Clyde. The sea-fish hatchery, which is 
also situated at Aberdeen, was reconstructed during the year in 
connection with the formation of a new road at the Bay of Nigeg 
by the Town Council of Aberdeen and at their expense, as described 
below, where a statement of the hatching operations will also be 
found. 
In the Firth of Clyde, and more particularly in Lochfyne, an 
investigation into the natural history and migrations of the herring 
was continued, with the view of ascertaining if possible the cause 
of the decline in the yield of the herring fishery there in recent 
years, and whether any regulations affecting the time or methods 
of fishing would be likely to be beneficial to the fishery as a whole. 
As stated in the first part of this Report, the catch last year was 
