GEOLOGY, 



ON THE ELEVATION OF THE COAST OF SWEDEN. 



M. NiLSSOis T , in a work on the existence of man in Scandinavia pre- 

 vious to the historic age, furnishes some interesting data relative to 

 the elevation of land in that region. A prominent rock in the harbor 

 of Fyellbacka has offered opportunities of careful examination ; and 

 hence it has been established, that in 1532 the rock was tAvo feet below 

 the surface, in 1742 two feet above the surface, and in 1844 four feet 

 above water. Thus it has risen six feet in 300 years, or at the regular 

 rate of one foot in fifty years. 



SUBSIDENCE OP LAND IN INDIA. 



DR. W. BUIST, at the British Association, stated that evidences of 

 upheavals and depressions of land exist all around the shores of India, 

 from Calcutta to Bombay. They are met with in clearing out docks 

 and tanks, in which beds of loamy soil are found, full of the roots and 

 stools of trees, at a level below the mean level of the sea, and covered 

 by sea-sand and shingle. At Bombay these ancient forests are covered 

 by a concrete of shells and gravel, and, in some instances, beds of 

 fresh-looking coral have been found. The lignite contains sulphate of 

 iron, which effloresces so abundantly as to have been collected and sold 

 to dyers. The roots are often much worm-eaten, the borings being 

 lined with carbonate of lime. Similar phenomena have been noticed 

 in the Gulf of Cambay, and at Karachee. The sea-margin of Western 

 India is almost everywhere an expanse of level ground, from three to 

 ten feet only above high water, consisting of loose or cemented gravel, 

 with sea shells. 



ISTHMUS OF SUEZ. 



AN interesting discussion on the topography of the Isthmus of Suez 

 has lately occurred in the London Institution of Civil Engineers ; the 

 occasion being a paper on that subject, in connection with the Ancient 

 Canals of Egypt, by Mr. Glynn, C. E. It appears, from recent levelings 

 and careful examination, that the levels of water in the Red Sea and 

 the Mediterranean are identical, and, therefore, that the project for a 

 line of canals, based on a presumed difference of upwards of thirty feet 

 between the seas, is not feasible. The error in the levels, computed 



