TENTH 
ANNUAL EEPOET 
OF THE 5i f, . •- 4 
FISHERY BOARD FOR SCOTLAND, 
Being for the Year 1891. 
PART IIL— SCIENTIFIC INVESTIGATIONS. 
Jireserttcb to botl) Uottfe* of ^Parliament in pnrgttance oC 
&ct 45 ani> 46 Diet, cap, 78. 
EDINBURGH: 
PRINTED FOR HER MAJESTY'S STATIONERY OFFICE 
By NEILL & Co., Old Fishmarket Close. 
And to be purchased," either directly or through any Bookseller, from 
JOHN MENZIES & CO., 12 Hanover Street, Edinburgh, and 
90 West Nile Street, Glasgow; or 
EYRE & SPOTTISWOODE, East Harding Street, Fleet Street, E.C.; or 
HODGES, FIGGIS, & CO., Limited, 104 Grafton Street, Dublin. 
1892. 
