of the Fishery Board for Scotland. 



339 



to Germany, France and Norway. Three new guano factories have been 

 erected, making the total number eleven. Attempts have been made to 

 plant out American oysters, but they have not been very successful. 



Professor Otto Pettersson has recently published the results of Swedish, 

 hydrographic research in the Baltic and North Sea, which have been 

 undertaken partly with the view of throwing light upon the movements 

 of fish shoals. The system adopted has been to despatch a number of 

 vessels simultaneously from different ports across that part of the sea 

 which has to be explored. In 1890 the Kattegat and the Skager Rack 

 were explored by means of five steamers ; and more recently the Danish 

 Government adopted the same method of simultaneous hydrographic 

 research for the Kattegat and parts of the Western Baltic and the Danish 

 Sounds. A very full and detailed account of the methods employed is 

 given in the Scottish Geographical Magazine, as well as the principal results. 

 Off the Swedish. Coast Professor Pettersson believes he has established the 

 relationship between the periodic changes in the physical conditions of 

 the sea, and the migratory movements of the herring, the winter herring 

 fishing ceasing whenever the warmer and Salter bottom water, which in 

 winter is found in the Swedish coast-channels, and on the coast-bank, 

 was displaced by the fresher and colder waters of the Baltic current. Of 

 late years this has, as a rule, taken place in February or March ; and 

 there seems to be a connection between the inflow and outflow of the 

 bank-water and the herring fishery. 



6. NORWAY. 



The operations at the sea-fish hatchery at Flodevig, under the direction 

 of Captain G. M. Dannevig, during the past season related chiefly to cod. 

 The very severe winter, by reducing the temperature of the water to a 

 very low point, proved fatal to the brood-fishes retained in the enclosures, 

 and the work was therefore much interfered with in the early part of the 

 year. By energetic efforts, however, Captain Dannevig succeeded in 

 procuring a fresh supply of adult cod before the season was over, and 

 nearly 100,000,000 of fry were successfully hatched and transferred to 

 the adjoining fjords. 



In the official reports of the various fishery inspectors for different 

 districts, a great deal of statistical information is given respecting the 

 fisheries along the coasts. At the great cod fishing at the Lofoten Isles, 

 27,415 men and 6292 boats were employed, of. which 10,411 men, with 

 1775 boats used gill-nets" , and 15,274 men, with 3819 boats used lines.* 

 The yield of the fishery amounted to 28,500,000 fish, 14,600 hectolitres 

 of liver, 24,350 hectolitres of roe, and 12,300 hectolitres of cod-liver oil. 

 A full account is also given of the winter fishery, of the herring fishery 

 and of the mackerel fishery. At the Lofoten fishery, systematic tempera- 

 ture observations have been carried on for a number of years, together 

 with observations on the weather, &c, and those for 1891-92 have been 

 recently published with a chart and report, f Such observations within a 

 fishing and spawning area so important as the Lofotens will be of per- 

 manent value. A number of interesting papers, dealing with a great 

 variety of fishery topics, are published in the various numbers of the 

 fishery journals. £ 



* Aarsberetning ved Kommende Norges Fiskeriers for 1894. 



t Temperaturmaalinger i Lofoten 1891-92, Christiania 1894. 



X Norsk Fiskeritidende Selskabet for de Norske Fiskeriers Fremme. 



