REVIEWS. 



319 



cutting instruments ; though that some uses of iron were known is shown 

 by the anchor. The canoe is the property of W. Hartley, Esq., and it is 

 much to be hoped that some good antiquarian will give us a more accurate 

 account of it and its different parts. 



Ekeata. — The name of the writer was omitted in the letter, pp. 248, 249. 

 It was by Dr. Leslie. At page 242,/or tab. " xxxii." read tab. " xxxii # ." 



MISCELLANEOUS NOTICES. 



The ' Quarterly Review ' of last month (July) has an exhaustive article 

 on Dr. Tyndall's ' Glaciers of the Alps ' (1860). 



The fifth part of vol. iv. of the ' Tyneside Naturalists' Field Club,' 

 contains the reports of the dredging expedition to the Dogger Bank and 

 along the coasts of Northumberland, made under a grant from the British 

 Association in 1861. There is an article on the "Geological Features of 

 the Parish of Edmondbyers," by the Rev. W. Featherstonaugh, M.A. 

 This point forms, for five miles, the north-west boundary of the county 

 of Durham, and is mostly unenclosed moorland. The higher ranges of 

 hills varying from 1000 to 1300 feet above the level of the sea, are composed 

 of beds of sandstone of various qualities, forming part of the " Millstone 

 Grit," the strata of which dip towards the south-east, and overlie, in de- 

 scending order, beds of ironstone, limestone, and the metalliferous strata, 

 which furnish the mineral wealth of the Derwent Heads and the Allen- 

 heads lead mines. 



REVIEWS. 



The Correlation of the Natural History Sciences. 

 By D. t. Ansted, M.A., F.R.S. 

 In this, the Rede lecture, delivered before the University of Cambridge 

 on the 12th of May last, Professor Ansted points out some of the mutual 

 relations that exist between the various departments of science, but espe- 

 cially the manner in which all natural sciences relate to geology, and 

 geology to all the others. By comparisons of this kind, he justly observes, 

 suggestions are obtained leading to fresh discovery, while they give pre- 

 cision to our knowledge, and serve not unfrequently to remind us of our 

 ignorance. The lecture is clear and concise, and precisely displays how 

 the advance of one science forces on improvements and modifications in 

 another, and that progress cannot be effected in any without its effects 

 being felt in all the rest, as well as amongst each other. A knowledge of 

 the perfect circulation of water, for example, is a definite result of modern 

 investigation, and is fruitful in geological suggestions. Present in the 

 great ocean, and covering a part of the land, the quantity of fluid water 

 on the globe is manifestly limited, in great measure, by temperature. And 

 so the question touches on Meteorology. Were the earth cooled down 

 below the freezing-point of water, though a certain portion of aqueous 

 vapour would remain to form an atmosphere, the whole earth would be solid, 

 and the circulation of water checked. Were the temperature to be raised 



