Part 121

East coast of North America. 42° N. (101). South of the Azores. 29° N. (128).

April.

East coast of North America. 42° N. (101). Gulf of Mexico. 24° N. (106 A).

May.

Near Butt of Lewis. 58¹⁄₂° N. (153, 154). East coast of North America. 44° N. (19). East coast of North America. 43° N. (97). East coast of North America. 40° N. (161). Between Canaries and Cape Verde. 22° N. (135).

June.

Coast of Norway. 64° N. (103). West coast of Scotland. 57° N. (31, 32). East coast of North America. 45° N. (83). East coast of North America. 42° N. (34, 35, 60, 84, 106 B). East coast of North America. 41° N. (53, 54, 162). Mediterranean. 38° N. (148). East coast of North America. 37° N. (52).

July.

Coast of Norway. 65° N. (61). Coast of Norway. 64° N. (103). Davis’ Straits. 64° N. (5). Coast of Norway. 63° N. (92, 115). Between the Far-Öer and the Hebrides. 60° N. (56). East coast of North America. 44° N. (29, 55). East coast of North America. 42° N. (98, 99). East of Cape San Roque. 5° S. (144, 145). West of Cape of Good Hope. 35° S. (129). South West of Cape of Good Hope. 38° S. (93).

August.

Coast of Norway. 70° N. (68). Coast of Norway. 66¹⁄₂° N. (157). Coast of Norway. 66° N. (64). Coast of Norway. 63° N. (9). Coast of Norway. 60° N. (117). Coast of Norway. 59° N. (85, 86). West coast of Scotland. 57° N. (137, 138, 139, 140). 100 miles west of Brest. 48° N. (152). North east of the Azores. 42° N. (25). East coast of North America. 42° N. (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 59, 62, 63, 69, 73, 133, 134). East coast of North America. 41° N. (158, 159, 160). Between St. Helena and Cape of G. H. 24° S. (118).

September.

Coast of Norway. 59° N. (87, 88, 89). North of Wales. 53¹⁄₂° N. (155). East coast of North America. 42° N. (71). East coast of North America. 41° N. (77). South west of Cape of Good Hope. 38° S. (126).

October.

Near Ibbestad, Christiansand. 58° N. (111 A). Bristol Channel. 51° N. (156). East coast of North America. 41° N. (50, 51).

November.

East of Scotland. 58° N. (141, 142, 143). Near Monillepoint. 34° S. (152 A).

December.

West of Portugal. 41° N. (120). North-east of St. Helena. 15° S. (131).

What conclusions may now be drawn from these facts?

1^o. That these animals seldom appear in the North Sea, between Great Britain, France, Belgium, the Netherlands and Denmark (141, 142, 143); that they don’t frequent the Baltic Ocean since two centuries; that they seldom appear in the so-called Skagerrak (85, 86, 87, 88, 89, 111 A); rarely show themselves in the Gulf of Mexico (106 A) or in the Mediterranean (148); but that they moreover inhabit the whole of the Atlantic Ocean.

2^o. That, when they remove their quarters, they seem to swim as much as possible in the so-called warm ocean-currents. The number of appearances, it is true, is very small, but surveying the foregoing list of appearances in the different months I am inclined to think that these animals in their migration from north to south really swim against the current, while, on the contrary, in their migration from south to north they move with the current. Only a very few times they were met with in the so-called cold ocean-currents.

3^o. We observe that in the month of August some individuals reached the highest northern latitude, i. e. 70 degrees, and that a series of appearances took place from 70° N. to 41° N. latitude,--that in the month of September they seem not to appear beyond 59° N. latitude; and so on;--so that we may conclude that in the beginning or in the middle of August they have reached their most northern point and begin to migrate towards the south, as in December we read of no appearances beyond 41° N. latitude, and in January of no one beyond 19° S. latitude. And further we conclude that they seem to leave the southern hemisphere to migrate again towards the north already in January, for in February they generally have already reached the northern latitudes, in March still higher, and so on.

4^o. We observe that in one month not all the appearances took place in the same latitude, consequently in one and the same month they are scattered over a vast portion of the ocean.

5^o. When the migration from north to south begins, which of course must be influenced by the early or late setting in of autumn, it seems that not only the individuals which have proceeded to the most northern coasts of Norway, but also some other individuals begin their migration towards the south. I think that we must find in this fact the explanation that even in July appearances took place at from 5° to 38° southern latitude, and that on August 6 an individual was seen at lat. 24° S. swimming towards the S. W. Though I have no appearances in the South Atlantic in the month of October, I am convinced that the greater part of the individuals are there during this month, as well as in November, December and January.--The reason that there are so few reports from these regions is of course that in comparison with the North Atlantic, a far smaller number of vessels visits the South Atlantic.

The two appearances which happened in the Pacific, and of which the dates are mentioned, are:

April.

South of Japan 31° N. (151)