The earth and its inhabitants .. . earthitsinhabita583recl Year: 1883 210 EUSSIA IN EUROPE. under the vegetable humus immense quantities of detritus are found, offering inexhaustible quarries to the inhabitants. They have been conveyed from one side of the Gulf of Finland to the other, as shown by the fragments strewn over the intervening islands. A mass weighing about 100 tons was noticed by Von Baer in the islet of Laven-saari, and a still larger block by Prince Krapotkin on the west side of Suur Tyttcrs. Stones of all sizes are yearly stranded on the islands Fig. 102.—The Pvnga-haeju. Acco
The earth and its inhabitants .. . earthitsinhabita583recl Year: 1883 210 EUSSIA IN EUROPE. under the vegetable humus immense quantities of detritus are found, offering inexhaustible quarries to the inhabitants. They have been conveyed from one side of the Gulf of Finland to the other, as shown by the fragments strewn over the intervening islands. A mass weighing about 100 tons was noticed by Von Baer in the islet of Laven-saari, and a still larger block by Prince Krapotkin on the west side of Suur Tyttcrs. Stones of all sizes are yearly stranded on the islands Fig. 102.—The Pvnga-haeju. According to Krapotkin. Scale 1 : 60,000. 1 Mile. of the gulf and on the coast of Esthonia, while smaller detritus arrives in such quantities as to palpably modify the outlines of the coast and creeks in a few years. The traces of glacier action are still plainly visible even in the general aspect of the land. There are few geological areas better marked by the parallelism of the valleys debouching on either side of the Gulf of Bothnia. All the Scan- dinavian rivers run north-west and south-east ; all those of Finland south-east and north-west. They move in opposite directions, but on closely corresponding lines along the axis of all the elongated lakes in the granitic valleys of Finland.
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