120 Chronicles of Science. [Jan., 



being apparently due to the excessive rainfall. There was not a 

 trace of marine denudation over the surface examined. 



Mr. Mackintosh, F.G.S., contributes an interesting paper " On 

 the Correlation, Nature, and Origin of the Drifts of North-west 

 Lancashire and a part of Cumberland, with remarks on Denudation." 



Mr. J. Wood Mason, F.G.S., describes a new Acrodont Saurian 

 from the Lower Chalk, near Folkestone, to which he assigns the 

 name Acrodontosaurus Gardneri. 



Mr. Searles V. Wood, jun., F.G.S., and Mr. F. W. Harmer, 

 bring forward evidence of a peculiar case of intra-glacial erosion 

 near Norwich. 



Their observations tend to show that after the deposition of the 

 uppermost bed of the Lower Glacial period there was a physical 

 break, a suspension of deposit, during which lapse of time an erosion 

 took place, sweeping out some of the glacial beds already formed, 

 and extending some way into the Chalk beneath. Into the trough 

 thus formed the succeeding drifts of Middle Glacial age were 

 deposited, as well as upon the hills in regular order above those 

 Lower Glacial beds unaffected by the denuding agency. A section 

 exhibiting these phenomena has recently been disclosed by some 

 new drainage works at Norwich, which the authors hoped by their 

 communication to induce geologists to visit. Some little time ago, 

 Mr. Harmer described to the Society a " Third Boulder-clay " 

 which he found lying in the bottom of the Yare valley. This may 

 now be explained from the section described in the present paper ; 

 the authors are inclined to regard it as a portion of the Great (or 

 Upper) Boulder Clay, which was deposited at this low level 

 owing to the intra-glacial erosion which had taken place before its 

 deposition. 



Mr. J. W. Flower, F.G.S., records some recent discoveries of flint 

 implements in the drift of Norfolk and Suffolk, concluding with 

 some observations on the theories accounting for their distribution, 

 The distribution of the drift-beds he is disposed to attribute, with 

 the French geologists, to some powerful cataclysmal action, perhaps 

 of short duration, and several times repeated, — an opinion in which 

 it appears but few of our own countrymen coincide. 



8. METEOKOLOGY. 



The sudden change of weather noticed in the note to our last 

 Chronicle, p. 549, forms the subject of an interesting paper in the 

 last number of the ' Journal of the Scottish Meteorological Society.' 

 This change occurred in the afternoon of the 28th of August. 

 The preceding days had been exceptionally warm, especially in 



