i8o 



Nort/wrn Ne^vs. 



'The investigation shows — (i) The proportion of Carboni- 

 ferous sandstones and limestones increases northward. (2) The 

 whin-sill increases southward proportionately though not 

 numerically, probably bearing transport better than (i). (3) The 

 Magnesian limestone in the form of large boulders disappears 

 southward. (4) The granites, gneisses, etc., decrease both 

 proportionately and in numbers northward, except in the Shap 

 granite and the Cheviot porphyrites, which show a rapid increase 

 in the same direction. A considerable number of (4) agree with 

 well-known rock types of Scandinavia, and these are more 

 plentiful in the south of the county and in Lincolnshire than in 

 North Yorkshire. The unknown rock types included in the 

 same group agree in this respect with these recognisable Scan- 

 dinavian rocks.' 



'The distribution of the Cheviot porphyrites, which occur 

 principally as stones and pebbles of smaller dimensions than the 

 boulders of the above table, presents some points of peculiar 

 interest. These, besides increasing in numbers towards their 

 source, are also more abundant in the upper boulder clays and 

 in the gravels at the highest levels ; while, on the other hand, 

 the Scandinavian rocks, either as pebbles or boulders, rarely 

 occur in either position.' 



Certain coloured flints and chalk fossils form an interesting 

 feature of the Yorkshire Coast drift. 



Pink coloured flints are numerous along the east coasts 

 and are believed to be non-British. They were at one time 

 regarded as of Danish origin, but Mr. A. Tesson, of the Danish 

 Geological Survey, informed Mr. Stather that pink flints do 

 not occur in Denmark either in the Cretaceous rocks or the 

 drift. 



Black flints abound in our glacial beds and are also of non- 

 Yorkshire origin ; green-coated flints also, though not so 

 numerous. 



The high zonal belemnite B. niucronata is found in large 

 numbers in east coast drift, but does not occur in Yorkshire 

 Cretaceous beds. 



{To be continued). 

 ^» 



Mr. G. W. Lamplugh's paper on ' The Gorge and Basin of the Zambezi 

 below the Victoria Falls, Rhodesia,' appears in the ' Geographical Journal ' 

 for February-March, 1908. It is well illustrated. 



We have received a pamphlet dealing with the Woltereck Process for 

 the production of Sulphate of Ammonia from Peat. It is published b}' the 

 Sulphate of Ammonia Co., Ltd., 171 Queen Victoria Street, E.C. 



Naturalist, 



