Reviews — E. G. Skeat and V. Madsen — Fossils in Boulders. 173 



only. Nevertheless, this disturbance produces results equally- 

 interesting on the Lul worth coast, where a region of compression 

 occurs, as shown more especially by the squeezing and contortion 

 of the Purbeck beds on the east side of Lulworth Cove, at Stair 

 Hole, and other places. Plate v gives a good illustration of 

 crushed and inverted Chalk-with-flints in Man 0' War Cove. 

 Here, the author says, we must conclude that the Middle and 

 Lower Chalk, the Upper Greensand and Gault, and the Wealdeu 

 and Purbeck Beds have suffered compression to the amount of 

 one-fourth their original thickness. The other disturbances of 

 post-Cretaceous age, and more especially the Eidgway fault, come 

 in for their fair share of notice ; whilst the remarkable phenomena 

 observed in the Kidgway cutting, where Oxford Clay appears in 

 the most unexpected manner, are duly discussed. 



As regards illustrations for these important features, Mr. Strahan 

 reintroduces his previously published map showing the intra- 

 Cretaceous and post-Cretaceous disturbances, together with his ' 

 previously published sections across the Purbeck and Eidgway 

 faults. Three folding plates of sections, coloured geologically, 

 further serve to display the marvels of the coast of East Dorset. 

 These are drawn along or transverse to the coast by Mr. Strahan, 

 and reduced from the original drawing by Mr. Gilbert Williams ; the 

 scale adopted is 12 inches to 1 mile, vertical and horizontal. It would 

 be interesting to make a coasting voyage in order to compare these 

 sections with Webster's bold di-awings in Sir H. Englefield's work. 



Chapters on physical and economic geology conclude this memoir, 

 which is, moreover, provided with an exhaustive bibliography of 

 some 25 pages on the " Geology, Mineralogy, and Palasontology of 

 Dorset," the joint work of the author and Mr. Whitaker. The 

 copious literature proves the interest which has been taken in this 

 part of the world, and there can be no doubt that the volume under 

 consideration is a most valuable addition to the general stock. Apart 

 also from its value in a scientific sense, and as an indispensable 

 addition to the library of all who take an interest in Dorset geology, 

 it is more creditable to the Stationery Office than many of the 

 memoirs which have been published by the Geological Survey. 



II. — On Jurassic, Neocomian, and Gaitlt Boulders found in 

 Denmark. By Ethel G. Skeat and Victor Madsen. Large 

 8vo ; pp. 213, with 8 plates of fossils and map. (Copenhagen: 

 Eeitzel, 1898.) 



THIS work relates to the investigation of the fossil contents of 

 a number of boulders of Mesozoic rocks, which are found 

 associated with boulders of crystalline rocks in various parts of 

 Jutland and the adjacent islands. The authors acknowledge the 

 assistance they have received from various quarters ; the material 

 having been placed at their disposal by the General Direction of the 

 Danish Geological Survey and other departments in Copenhagen. 

 Their work was also greatly facilitated by assistance and advice 



