An investigation into questions of social hygiene in the counties of Västerbotten and Norrbotten, Sweden / conducted with the support of the Royal Medical Board in 1929-1931.

  • Sweden. Medicinalstyrelsen.
Date:
1937
Catalogue details

Licence: Public Domain Mark

Credit: An investigation into questions of social hygiene in the counties of Västerbotten and Norrbotten, Sweden / conducted with the support of the Royal Medical Board in 1929-1931. Source: Wellcome Collection.

    25/860 (page 7)
    a wooded moraine country, about 175 kilometres in breadth, which in many places, especially in the basins, is of a marshy character. Finally, between the last-mentioned area and the Norwegian frontier, there is a mountainous region, where the loftiest peaks tower to a height of more than 2,100 metres. Its breadth ranges from 75 to 150 kilometres. Through deep-cut glens between the mountains, swiftly-flowing rivers, tumbling into cascades, rush, in a south-easterly direction, on their course towards the sea, here and there expanding into long narrow lakes. From the eoastal zone, where we find the major part of the arable and pasture land in Upper Norrland, but which is mostly wooded, eultivated tracts extend along the river valleys into the interior. The forests in the coastal zone and wooded area consist mainly of firs and pines. Adjoining the mountainous region there is a narrow belt covered with stunted knotty birches. The approximate boundaries of these three areas are shown on the map. The climate in this entire northerly region is severe. The winters are long and cold, the summers short, lasting only two to two and a half months. The nearer we approach to the sea, the milder is the climate; as we get further inland the winters become longer and colder. Owing to these differences in climate and the high elevation of the interior, there are marked dis- parities in the mean temperature even on the same latitude. The subjoined table will serve to give some idea of the temperature conditions at various latitudes and altitudes during the four seasons of the year. Mean temperatures for the years 1859—1925. Degrees Celsius Locality hee aan Whol eal. so date ce te minal i July | Oct. | me year Karesuando ...| 68°27’ | 333 m.| — 14.5} —4.5 | +12.5} +2.7 | —2.7 GHUIVARE 60.50: 67° 8’ | 865 » | —12.9; —2.0]}+ 13.9} —15} —14 Haparanda ...... 65-00! 9 »|—109} —16|]+151; +14] +06 Stensele ......... | 65° 4’; 328 » | --121] —0.7 | +1399) +03 | —01 | Umea ............] 68°50’ | 17 » | — 8.0} +0.2 | +150] +28 | +24 According to Professor P. HeuusTrom, the »vegetation period» in northern Lapland may be estimated at 139 days, in southern Lapland 142, in the coastal zone of Norrbotten 148 and in that