— 50 — 



In sixty of these experiments, a covering of small mesh was used over the 

 ordinary cod-end. As usual, records of size, sex, degree of maturity etc. of all species 

 were kept, but special attention was devoted to haddocks, plaice, cod and lemon soles. 



From the latter half of December until the end of March the motor boat 

 "Enid" carried out a research into the younger stages of the herring in the Inverness 

 and Beauly Firths. From April until July the "Enid" was used in making an exten- 

 sive investigation into the bottom fauna of the inshore grounds from Red Head to 

 the Dornoch Firth by means of the Petersen Grab. 



Intensive investigations on the haddock, a species of considerable importance 

 to Scotland, have been carried out on the lines of the International programme. 



The following are the numbers of haddocks examined from the various 

 areas investigated by the research steamer during the period: — 



Moray Firth 48,658 



Aberdeenshire Coast 52,854 



Middle Grounds 138 



Firth of Forth 93 



Total 101,743 



Hydrography. Only work in connection with the definite fishery investig- 

 ations has been attempted. Special attention has been paid to the hydrographie 

 conditions in the North Sea consequent upon the admixture of Atlantic water. The 

 research vessel immediately she was ready for sea (July) left to explore this area. 



Holland. Owing to the lack of a research vessel the biological work of Hol- 

 land was chiefly directed to investigations in the inshore and coastal waters. For 

 the same reason hydrographical work was confined to the ordinary surface observ- 

 ations on board steamers and lightvessels and some station work at Helder. On 

 the lightvessels meteorological observations were made as usual. 



Sweden. Publications by 0. Pettersson, J. W. Sanuström, J. Sjöstrand, 

 G. Ljungdahl have been issued. 



B. Investigations. 

 a. Hydrographical Programme. 



I. It is recommended that Great Britain shall undertake temperature- and salinity- 

 determinations once every day on at least two light-vessels in the North Sea. 

 The determinations of temperature and salinity on the Dutch lightships are 

 to be carried out according to the scheme hitherto followed. It is highly desirable 

 that the observations from the Danish lightships in the North Sea and from 

 Skagen southwards be carried on as hitherto. Sweden undertakes similar observ- 

 ations on the same scheme from 3 Swedish lightships in the Cattegat. 



