ISO 



A^ofes and Comments. 



literature. Of some historical interest is the copy of the map 

 drawn by Mr. Wood to accompany the well-known paper on the 

 * Glacial Deposits of Lincolnshire and South-East Yorkshire/ 

 printed by the Geolog"ical Society of London in 1867. It appears 

 the map was originally prepared for publication in the 'Quarterly 

 Journal of the Geolog-ical Society,' but after it had been litho- 

 graphed was rejected on the ground that it was not sufficiently 

 artistic ! It is pointed out that this map is the first of its kind 

 in existence. - 



We are indebted to the Yorkshire Geological Society for 

 the use of the two specimen illustrations from their excellent 

 volume (see Plate VIII.). 



CONTORTED STRATA IN DERBYSHIRE. 

 The following illustration of a remarkable contortion in the 

 Yoredale Shales, is reproduced by permission from the ' Proceed- 

 ings of the Geologists' Association,' and appears in an account 

 of an excursion of the association to North Derbyshire. It will 

 be seen that the beds, which were exposed during excavations 



r 



Apprnximtl-i; Scale of Fegr (Ctntral ft>rtior) 



Contorted Beds in the Dsrwent Valley, Derbyshire. 



Naturalist, 



