La deuxième édition de l'Atlas de Finlande: premier article

Summary

This article is a detailed review of the second edition of the Atlas of Finland, published in 1910 by the Geographical Society of Finland. This edition is a comprehensive revision and expansion of the 1899 first edition, significantly increased in size, containing 50 maps, 233 cartograms, 28 diagrams, and 38 city plans, accompanied by a text of approximately 1500 pages. The article first notes that although the atlas's cartographic accuracy in the northern regions is still limited by the lack of precise geodetic data, it shows significant progress in both depth and breadth, adding new chapters such as oceanography and agricultural statistics, and deepening existing ones like biogeography and hydrography. The author emphasizes that this collective work, while a series of excellent monographs, lacks an organic, integrated geographical synthesis, and suggests that condensing its content into a single volume would be of great service. The article then delves into Finland's physical geography, pointing out that while the overall terrain is a vast plain gently sloping towards the sea, the surface is highly rugged due to ancient Precambrian bedrock and Quaternary glaciation, with numerous lakes and a rugged coastline. The geology section explains the evolution of the Fennoscandian Shield, including seven Precambrian series and tectonic movements during the Caledonian and Tertiary periods. The section on glacial formations analyzes the ice sheet's erosive and shaping action, explaining the bathymetric profiles of lakes. The latter half of the article shifts to biogeography, detailing the vertical and horizontal zonation of vegetation from southern deciduous forests to northern coniferous, birch, and finally Lapland alpine tundra zones, and analyzing the distribution and genesis of forests and bogs. The zoogeography section discusses the south-to-north impoverishment of fauna, distribution limits of various species, their possible origins, and mentions relict species from postglacial times, such as the Ladoga ringed seal. Overall, this text serves as a comprehensive academic evaluation and summary of this significant geographical work.