EE VIEWS. 
319 
cutting instruments ; tliougli that soine uses of iron were known is sliown 
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. 
Errata. — The name of the writer was omitted in the letter, pp. 248, 249. 
It was by Dr. Leslie. At page 242,ybr tab. " xxxii." read tab. " xxxii*." 
MISCELLANEOUS NOTICES. 
The ' Quarterly Eeview ' of last month (July) has an exhaustive article 
on Dr. Tyndall's ' GJaciers 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 tlie British 
' Association in 1801. There is an article on the "Geological Features of 
I the Parish of Edmoudbyers," by the Rev. W. Featherstonaugh, M.A. 
! Tliis point forms, for five miles, the north-west boundary of the county 
j 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 tlie south-east, and overlie, in de- 
scending order, beds of ironstone, limestone, and the metalliferous strata, 
I which furnish the mineral wealth of the Derwent Heads and the Allen- 
heads lead mines. 
EEVIEWS. 
The Correlation of the Natural Jlisfory 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, be justly observes, 
suggestions are obtained leading to fresh discovery, while they give pre- 
cision to our knowledge, and serve not unfrequeutly 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 efi'ecta 
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 
