Reviews — Geological Survey of England and Wales. 37 



Middle, and Lower Chalk ; Selbornian, Upper Greensand, and Gault ; 

 Lower Cretaceous or Lower Greensand, Folkestone Beds, Sandgate 

 Beds, Hythe Beds, Atherfield Clay, and lastly the Weald Clay. 



Nothing is yet known about the strata which underlie the Weald 

 Olay ; but as far as can be judged from neighbouring areas, a great 

 thickness of Lower Cretaceous and Jurassic rocks would be met 

 with. It is not probable that any minerals worth mining occur 

 within several thousand feet of the surface. 



Figures of fossils from the Gault, the Lower Chalk, the Middle 

 and the Upper Chalk are given in the text, together with lists 

 of fossils and sections. Two sections north and south across the 

 a,rea (1) from Easebourne across Heyshott Down (745 feet) and 

 Goodwood Kacecourse (542 feet) to Kumboldswyke, and (2) from 

 Broadford Bridge across Kithurst Hill (700 feet) to Highdowu 

 Hill (266 feet), form the frontispiece to this little memoir, which is 

 olearly written, but less interesting geologically than one would 

 have expected, considering its well-marked physiography. The 

 oolour-printed geological map is extremely well executed and clear. 



deferring to some of the steep slopes of the Lower Chalk (p. 22), 

 Mr. Clement Reid observes : " Some parts of the slopes are too steep 

 for cultivation, and are clothed, and seem always to have been 

 olothed, with ancient hanging woods, locally known as ' hangers,' 

 principally of beech, with some undergrowth of holly and hazel. 

 So little of the primaeval forest is anywhere left in Sussex, except 

 on the heavy clay lands of the Weald, that it is interesting to find 

 these small outliers still remaining. They contain rare woodland 

 animals and plants, such as one does not find in the forests of the 

 Weald. Among the moUusca both Helix ohvolnta and Clausilia 

 Bolphii are to be found, and among the plants Solomon's seal and 

 Herb-Paris. In one of these woods the zigzag connecting the Roman 

 Stone Street with the lowlands is well seen," 



2. — Mr. W. A. E. Ussher, the author of the present Explanatory 

 Memoir, has had the advantage of following in the footsteps of 

 •one of our most able and distinguished of eai'ly Devonian geologists, 

 E. A. C. God win- Austen, whose map appeared in 1840. Another 

 able worker. Dr. Holl, brought out a map in 1868, with some 

 additional details, and he was followed a few years later by 

 Mr. Arthur Champernowne, who commenced a careful survey of 

 the neighbourhood of Totnes. Mr. Horace B. Woodward, at Torquay, 

 and Mr. Ussher, at Paignton, commenced the official re-examination 

 -of the district in 1874-75. 



Mr. Champernowne, shortly before his death, generously handed 

 over the results of his geological labours to the Survey, and to 

 Mr. Ussher was entrusted the task of embodying these results in 

 the official publications. 



The new map (Sheet 350) was published in 1898, and the present 

 memoir is issued as an explanation of that map. 



The district is one of exceptional difficulty owing to the want of 

 persistence in well-marked lithological horizons, and to stratigraphical 



