Geological Society. 179 



cosity of gases ; (3) diffusion and (4) conduction of heat. Part III., 

 on the direct properties of molecules, consists of a single chapter — 

 probably the most fascinating in the whole book. 



For the benefit of those who wish to pursue their studies beyond 

 the limits oF the book, a wealth of references to original sources of 

 information is given. English physicists will feel a debt of 

 gratitude to Mr. B;iynes for the trouble of translating the book — 

 no easy task — and for the few notes which he has appended to it. 

 It is, therefore, somewhat unwillingly that we close this notice by 

 saying that in several instances we consider the translation some- 

 what too literal, with the result that the English rendering smacks 

 too much of the German idiom. 



XII. Proceedings of Learned Societies. 



GEOLOGICAL SOCIETY. 

 [Continued from vol. xlix. p. 572.] 



March 7th (cout.).— J. J. H. Teall, Esq., M.A., F.P.S., President, 

 in the Chair. 



The following communications were read : — 



2. ' The Pocks of the South-eastern Coast of Jersey.' By John 

 Parkinson, Esq., F.G.S. 



In this paper the author has continued the study of the deep- 

 seated rocks of Jersey begun in a communication presented to the 

 Society last session entitled ' On an Intrusion of Granite into 

 Diabase at Sorel Point (Northern Jersey).' A great resemblance 

 exists between these rocks in the north and south of the island, 

 and it is concluded that they represent parts of the same magma ; 

 but in the south-east additional complications arise, owing to the 

 intrusion of another rock before the invasion of the granite. For 

 convenience of study the district under discussion is divided 

 into two parts, an Eastern and a Western, separated the one from 

 the other by the western termination of the Grove d'Azette. In 

 the Eastern district the granite and the intrusive rock which pre- 

 ceded it are found ; in the Western a rather different rock invades 

 the diabase. The latter is correlated with the aplite-intrusion of 

 the northern coast. 



Taking first the earlier intrusion found at Le Nez Point, it is 

 shown that it consists of a rock more acid than a diorite, but on 

 the whole more basic than the granite which followed it. Micro- 

 scopical examination indicates that it was poor in ferro-magnesian 

 minerals, and that quartz and orthoclase, though present, are not 

 found in the proportion which characterizes the granite. This 

 rock, the exact composition of which it is not easy to discover, has 

 invaded the diabase, as well as a dioritic rock associated with it, 

 streaking and veining them. Mixing took place as a result of euch 



