258 Bihliographical Notice. 



Thixs the variations of colour and of light and shade, the different 

 aspects of hill and dale, the presence of particular plants and animals, 

 with oth er phenomena of nature, hccorae of especial interest for 

 both obs ervation and philosophical consideration. 



The c onstitution of the Society', its Executive Committee, the 

 plan of summer excursions and of winter lectures are explained. 

 Tho Field-class includes three graduating divisions — one studying 

 geography in relation to geology, another sections of the strata, and 

 the third especially studies one geological formation, all in the 

 Home Counties. The winter lectures successively treat of the 

 geology of different parts of the South-east of Englaiid. The 

 method, apparatus, and appliances of geological research are also 

 indicated. 



Keports of the lectures given by Prof. H. G. Seeley are then 

 supplied: thus: — 1. Introduction to Field Geography, with illus- 

 trative notes on the Chalk Hills of Kent and the Valley of the 

 Darent ; the Chalk Hills of Surrey ; the Chalk Escarpment ; and 

 the Sand Hills of Frant. 2. Introduction to Field Geology. 3. The 

 Thames Valley. 4. The Lower Greensand and Upper Neocomian. 

 with nineteen Reports by Students on local exposures and sections 

 of the several beds. 5. The Gault and Upper Greensand, with six 

 local sections by Students. 6. The Chalk, with eighteen illustrative 

 sections by the Students. 7. The Thanet Sands, with four such 

 sections. 8. The Woolwich-and-Reading Beds, with seven such 

 sections. 9. The London Clay, with three such sections. 10. The 

 Brick-earth and Gravels, with four such sections. Several chemical 

 analyses of Lower Greensand, Gault, and Chalk are included iu the 

 Reports. A tabulated Register of the fossils found by the Members 

 during the season of 1890, drawn up by Mr. R. H. Bentley, tho 

 Secretary, is appended, with proportional blank paper for future 

 use. The woodcuts of sections have been drawn by Mr. Niool 

 Brown, F.G.S., Vice-Chairman of the Society, chiefly from his own 

 note-book ; he has supplied several of the Reports, and he has edited 

 this useful Handbook, illustrative of the Geology of a considerable 

 portion of South-eastern England. 



A striking feature in this geological book is the clearness of manv 

 of the detailed sections, as described by individual observers — often 

 the same section noted by two or three — mentioning what is most 

 interesting to themselves ; some are Female Students. Therefore, 

 taken as a whole, the interi^rctation of the sections are fitted to 

 different minds, and are not given in one set form of thought and 

 phrases. The influence of the Director's acute observation and broad 

 philosopliy is recognizable throughout the work. 



A liberal and very useful Index, by ^Ir. J. H. Hodd, supjilies a 

 ready access to the manifold subjoels of this Handbook, which will 

 be welcomed by many who sock for information and find interest 

 among the natural sources of amusement and recreation round about 

 London. 



