Notices respecting New Booh. 431 



geological map of the north-eastern part of the county, and a com- 

 plete section drawn to scale, of the whole range of the cliffs, besides 

 several enlarged representations of the more interesting parts. 



We request the attention of geological students who may be pre- 

 paring to publish the results of their investigations, to the subjoined 

 remarks by Mr. Phillips on the colouring adopted in his sections, &c. 



" With regard to the colouring, the natural prevailing hues of the 

 strata have been generally imitated ; but where two rocks could not 

 be thus well discriminated, the difference of their tints has been ne- 

 cessarily exaggerated. It is a common opinion that all geological 

 works should be coloured upon one model ; but what model shall we 

 follow ? No geological map can possibly be so filled with colours as 

 to embrace all the minor subdivisions of rocks which, in local sections, 

 it would be unpardonable to omit. Besides, the colours of rocks 

 vary, and circumstances may make it desirable that sometimes a 

 stratum should be coloured strongly to mark its importance, though 

 at other times it would be better represented by a fainter shade. 

 However, to increase as little as possible the confusion of colours 

 which already exists, I have followed in the colours of the oolitic 

 rocks the works of Mr. Smith, and have preferred with Mr. Green- 

 ough, to leave the chalk white. Where rocks were to be thus repre- 

 sented for the first time, I have used such colours as have not been 

 before appropriated." 



From Spurn northward to Bridlington the whole line of the cliffs is 

 composed of various bands of diluvium, which the author, permitting 

 himself to deviate from the ordinary English notions of the deluge, 

 attributes to different periods of diluvial agency. In detached 

 hollows on the surface of this diluvium, to the height sometimes of 

 eighty feet above high water, lie no less than twenty-five lacustrine 

 or freshwater formations, with shells, peat, hazel-nuts, broken trees, 

 and bones of deer and other animals. The following passage conveys 

 a good notion of the ravages of the sea on this wasting shore : pp. 

 59, 60. 



" Spurn Point, the southernmost part of the'coast of Yorkshire, is 

 a low peninsula of gravel and sand, accumulated by the sea and the 

 wind, and laid in its peculiar forms by the united action of currents 

 from the sea and the Humber. The materials which fall from the 

 wasting cliffs between Bridlington and Kilnsea, are sorted by the tide 

 according to their weight and magnitude ; the pebbles are strewed 

 upon the shore, beneath the precipice from which they fell ; the sand 

 is driven along and accumulated in little bays and recesses ; whilst 

 the lighter particles of clay are transported away to the south, making 

 muddy water, and finally enter the great estuary of the Humber, 

 and enrich the level lands under the denomination of warp. The 

 sand and pebbles, which were at first deposited near the place where 

 they fell, are afterwards removed further and further south by the 

 tide, and the cliffs are left exposed to fresh destruction. Thus the 

 whole shore is in motion, every cliff is hastening to its fall, the pa- 

 rishes are contracted, the churches washed away, and not unreason- 

 able fears are entertained that, at some time the waters of the ocean 



and 



