TENTH ANNUAL REPORT. 
TO THE MOST HONOURABLE 
THE MA11QUESS OF LOTHIAN, K.T., 
Her Majesty's Secretary for Scotland. 
Office of the Fishery Board for Scotland, 
Edinburgh, 28th June 1892. 
My Lord, 
In continuation of our Tenth Annual Report, we have 
the honour to submit — 
PART III. — SCIENTIFIC INVESTIGATIONS. 
General Statement. 
This part of the Tenth Annual Report deals with the Scientific 
Fishery Investigations carried on by the Board during 1891. An 
account is also given of the fishery work and regulations in other 
parts of the United Kingdom, on the Continent, in America, and 
several of the Colonies. 
The scientific work has been carried out, and the scientific 
report prepared under the superintendence of Dr T. Wemyss Fulton, 
F.R.S.E., Secretary for Scientific Investigations, acting under the 
direct instructions of the Board. 
During 1891 the investigations were prosecuted on the same 
lines as indicated in last year's Report, and have resulted in further 
extensions of knowledge regarding the life-history and habits of 
the food-fishes, so far as these relate to fishery questions. A large 
part of the inquiries have been carried on by means of the Board's 
steam vessel the ' Garland/ under the efficient command of Captain 
R. E. Simpson ; but the small size of this vessel has curtailed their 
usefulness. 
Investigations have also been continued at the Board's Labo- 
ratories at Dunbar and St Andrews ; on the development of the 
plaice, the sand-eel, and the rate of growth of fishes at the former, 
and on the halibut, saithe, pollack, torsk, &c. at the latter. 
Professor M'Intosh, nnder whose able supervision the St 
Andrews Laboratory has been conducted since its commence- 
ment, has also, as in former years, courteously undertaken the 
study and description of the large collections of the eggs and 
young of the food-fishes made by the 'Garland;' and the Board 
desire to record their appreciation of the valuable assistance 
which has been rendered by Professor Mlntosh in connection 
with the Scientific Investigations for a number of years. 
Physical observations on the temperature and density of the 
