Noies and Comments. 3 



The disturbed area contains about 17,000 square miles, including 

 the whole of the counties of Lincoln, Nottingham, Derby, 

 Stafford, Leicester, and Rutland, the greater part of Yorkshire, 

 and portions of Lancashire, Cheshire, Shropshire, Worcester- 

 shire, Warwickshire, Northamptonshire, Cambridgeshire, and 

 Norfolk. The originating fault runs from about E. 38° N. to 

 W. 38° S., and appears to be nearly vertical within the south- 

 western focus, and inclined to the south-east in the north-eastern 

 focus. The first and strongest movement took place within 

 the south-westena focus. A twin-earthquake is probably due to 

 the diflfereratial growth of a crust-fold along a fault which 

 intersects it transversely, the first movement as a rule being 

 (one of rotatiom of the middle limb, accompanied by the almost 

 ■simultaneous slip of the two arches, and followed soon after- 

 wards by a shift of the middle limb. The movements, in 

 which the Doncaster earthquake originated, presented a slight 

 variation in this order. They consisted of successive, but 

 continuous, displacements, first of the south-western arch, then 

 of the middle limb, and finally of the north-eastern arch. 



PICTURES FROM NATURE.* 



Under the above title Messrs. Cassell & Company have 

 published fifteen large Rembrandt Photogravures of Birds and 

 Beasts at home amidst their natural surroundings. Without 

 ihesitation we can say that these pictures are really the finest 

 that w^e have seen for some time, and they are undoubtedly the 

 ■* pick ' from the negatives of the Brothers Kearton. The 

 •subjects portrayed are Black-throated Diver, Kittiwakes at 

 Hjome, Leverets in their form. Kingfisher, Squirrel, Puffins at 

 home, young Willow Wrens, Ring Dove, young Cuckoo and 

 Sedge Warblers, Hedgehog, young Long-eared Owls, Gannet, 

 Peewit, Sparrowhawk adding sticks to her nest, and the Great 

 Tit, or Ox-eye. Each is a most suitable subject for framing 

 and hanging in a naturalist's ' den,' and each is accompanied by 

 a page of descriptive matter. 



THE BLACK-THROATED DIVER. 



Perhaps one of the most striking of the pictures is that of 

 the Black-throated Diver on her nest, which the publishers 

 kindly enable us to reproduce on a small scale, though even this 



* In portfolio, aos. 6d., i8|in by 11. ^in. 



1906 January i. 



