304 Notes and Comments. 
boulder clay with its Carboniferous Limestones and basalts. 
The gravels are somewhat similar to those described by Mr. 
Clement Reid at Kelsey Hill as interglacial, but the present 
authors consider them to be merely part of the terminial 
moraine of the North Sea ice-sheet. In addition to the far- 
travelled boulders, a lengthy list of marine shells, mostly of an 
Arctic type, has been compiled, and the species Cyvena (Corbicula) 
fluminalis (a freshwater form), also abounds. An interesting 
collection of mammalian remains has been secured, and includes 
bones of Hlephas primigenius, Rhinoceros, Walrus, Red Deer, 
Bison priscus, Horse, and Bos. Some of these bearevidence of 
having been gnawed by the Hyena. It is thought that the shells 
and mammalian remains have been caught up by the moving ice 
mass, and in this way incorporated in the moraine. 
IRON “ORE SUPPELES: 
Mr. Bennett H. Brough pointed out to Section C. that in 
Great Britain the principal iron-ore producing districts are 
Cleveland, in North Yorkshire, which in 1905 yielded 41.0 per 
cent. of the total output of the kingdom ; Lincolnshire (14.8 per 
cent.), Northamptonshire (13.9 per cent.), and Leicestershire 
(4.7 per cent.), together yielding 33.4 per cent. of the total out- 
put ; Cumberland (8.6 per cent.) and North Lancashire (2.7 per 
cent.), Staffordshire (6.1 per cent.) and Scotland (5.7 per cent.). 
The Cleveland iron ore occurs in a 1o-foot bed in the Middle 
Lias, and contains about 30 per cent. of iron. It is worked by 
underground mining. In Lincolnshire, Northamptonshire, and 
Leicestershire the brown iron-ore beds form part of the Inferior 
Oolite, and contain about 33 per cent. of iron, the workings 
being mostly opencast. In Cumberland and North Lancashire 
the red hematite occurs in irregular masses in Carboniferous 
limestone. It contains more than 50 per cent. of iron, and is 
worked by underground mining. The ironstone in Staffordshire 
and in Scotland is mostly obtained from mines that also produce 
coal. Such, in brief, are the home deposits from which the 
British supply of 14,590,703 tons of iron ore, valued at £3,382, 184, 
was obtained in 1905. Even that enormous output did not 
meet the consumption, and 7,344,786 tons were imported. 
MARINE PEAT. 
Mr. J. Lomas reported that during excavations in the Union 
Dock on the Mersey Docks and Harbour Board Estate, in the 
South End of Liverpool, a very remarkable peat band was dis- 
Naturalist, 
