Geological Society. 



439 



who have no previous knowledge of this subject) are devoted to 

 Kinematics, up to and inclusive of Projectiles. Chapters x. to xiii. 

 are mainly occupied with Statics : in chapter xiv. several problems 

 in Statics are discussed: the remaining chapters (viii., ix., xv. to 

 xvii.) treat of Kinetics, and the last chapter (xviii.) is taken up 

 with the dimensions of Units. In the main body of the work are 

 numerous examples, some of which are very fully and carefully 

 worked out. At the end are a number of additional exercises, 

 arranged under the subjects of the previous chapters ; these have, in 

 the main, been taken from London University examination papers. 

 To all the Examples answers are given. Original treatment is not 

 to be looked for in a work of this character, which is written for 

 Students preparing for the above-named and similar examinations. 

 But what we have found is that great pains have been taken in 

 clearing up difficulties which young students meet with in this 

 subject ; and this we state though here and there are small over- 

 sights, as on p. 21 and one or two other places. These can easily 

 be removed in a subsequent edition. Some parts, notably the 

 earlier chapters, and bits here and there in later chapters, are very 

 well done ; and in the other weaker parts Dr. Burton sins, if he 

 does sin, with the majority of elementary text-book compilers. 



LV. Proceedings of Learned Societies, 



GEOLOGICAL SOCIETY. 



[Continued from p. 288.] 



February 25, 1891.— Dr. A. Geikie, F.R.S., 

 President, in the Chair. 



THE following communications were read : — 

 1. "A Contribution to the Geology of the Southern Trans- 

 vaal." By W. H. Penning, Esq., E.G.S. 



The following table shows the author's classification of the sedi- 

 mentary rocks of this region, as compared with those of Messrs. 

 Dunn and Stow and Prof. Rupert Jones : — 



Dunn. (Map, 1887). Stow. T. E. Jones. Penning. 



Coal-measures : Upper Karoo N 

 (formerly Stormberg Beds, 

 above Upper Karoo). 



Kimberley Shales : Lower Karoo 

 (formerly Upper Karoo). 



Lydenburg Beds. 



Namaqualand Schists. 



SH 



Upper 

 Karoo. 



I Lower 

 Karoo. 



« IS 



Ho 

 PR 



High Veldt Beds. 



1-5 



Kimberley Beds. ) 



Klip River \ 

 Series. 



Witwaters- 

 rand Series. 



Be Kaap - 

 Beds. 



