568 Reviews — Geologists,'' Association. 



the Jurassic, have been found in the lower strata in Korea ; but the 

 Kyong-sang .formation is more fully developed in Japan, where it 

 includes representatives also of E,h^tic beds and Lias. 



Dr. Koto gives particular descriptions of the igneous rocks, which 

 were erupted at the close of the Kyong-sang period (Mesozoic). The 

 land was afterwards "dislocated and uplifted, depressed and remodelled, 

 and the general outline of the peninsula was then complete. Since 

 then, as in the case of China, the land of Korea has remained long in 

 the Continental Period, and has been degraded from Alpine altitudes 

 to hilly tracts ; the materials from the ruined mountains forming in the 

 meantime the Tertiary deposits near the seashore ", on the east coast. 

 Basalt was erupted during Tertiary times, but a much greater out- 

 pouring seems to have taken place during the Diluvial Period in North 

 Korea. Otherwise this later epoch appears to have been " a lost 

 period in the record of the deposits of the peninsula", owing to the 

 fact that there was "intense sub-aerial degradation, and the wash has 

 been carried down to the sea as fast as it has been formed ". Much of 

 the ground now remains a semi-desert and desolate, but the beginning 

 of the Recent Period was marked by much snow and rain, by evidence 

 of ice-action and of floods, which led to accumulations of debris along 

 the slopes of the Piedmont Hills and choked the valleys with boulder 

 gravel. 



YI. — Geologists' Association, 



IN the GEOLoaicAL Magazine for February last (p. 96) we called 

 attention to the Jubilee of the Association, and mentioned that 

 arrangements had been made to commemorate the occasion by the 

 issue of a volume that should deal with the geology of the districts of 

 England and Wales to which excursions had been made since 1858, 

 the subjects to be treated from the standpoint of our present knowledge. 

 In the meanwhile there has been printed the very interesting 

 presidential address by Professor W. W. Watts (Proc. Geol. Assoc, 

 xsi, p. 119) on " The Jubilee of the Geologists' Association ", wherein 

 it is noted that the actual date of birth was December 17, 1858. 

 Professor Watts has also given a short memoir, with portrait, of the 

 first President of the Association, Toulmin Smith, who was a zealous 

 worker on chalk sponges and flints. 



We have now received Part I of the Jubilee volume, entitled 

 Geology in the Field, edited by Messrs. H. W. Monckton & R. S. 

 Herries. The size of the volume has proved to be much larger 

 than was anticipated, and three further parts are promised. It is to 

 be presumed that they will be continuously paged, and be supplied 

 with an index. The present part, however, fills 209 pages, it 

 contains seven articles, and is illustrated by four plates. 



Middlesex and Hertfordshire are dealt with by Mr. J. Hopkinson ; 

 Essex by Mr. T. Y. Holmes ; Cambridgeshire, Bedfordshire, and West 

 Norfolk by Mr. R. H. Bastall ; Buckinghamshire by Dr. A. Morley 

 Davies ; and the Oxford and Banbury District by Mr. J. A. Douglas. 

 These articles have been written generally on the plan previously 



