1M)8 Geological Society : — 



modern theory, which by (lie addition of the electron to the 

 electromagnetic theory as jt left the hands of Maxwell has broad- 

 ened in a remarkable way our whole physical horizon. The diffi- 

 culties of explaining a theory which is "fundamentally mathema- 

 tical are not small ; and although here and there some obscurities 

 (it not inaccuracies) will be found, the general discussion is 

 wonderfully clear and must have cost the author great thought 

 and labour. The book proper consists of twenty-tour chapters 

 covering 505 pages, but a series of .Appendices mainly mathema- 

 tical occupies 120 pages more; and these will be found very 

 usefuJ to the student of mathematical physics. The twenty- 

 fourth chapter is on the Place of Mind in the Universe, in which 

 the author argues for the existence of a universal mind, corre- 

 lating the otherwise Beflarate units forming the minds of all living 

 organisms, and this universal mind is regarded as the origin of 

 evolution. 



\\ i; have received the volumes of magnetic observations during 

 L905and L906 at Baldwin and 7ieques (Porto Eico), two obser- 

 vatories of the U.S. Coasl and Geodetic Survey. I he volumes 

 rally those for the immediately preceding years, 

 containing hourly measurements of the magnetic curves," and 

 diurnal inequalities based on the ten quietest davs of each month. 

 ihere are lists of the chief magnetic disturbances, and some of the 

 disturbed t paces are shown on a reduced scale. The Vieques volume 

 ; ":" contains a lisl of the earthquakes recorded by Bosch-Omori 

 seismographs lrom their erectipn in 1903 up to the end of 1906. 



CXV. Proceedings of Learned Societies. 



GEOLOGICAL SOCIETY. 



[Continued from p. 792.] 



March 23rd, 1910.— Prof. W. W. Watts, Sc-.D., M.Sc, F.B.S., 



President, in the Chair. 



r PIlE following communication was read : — 



1 On Paloo.viiris and other Allied Fossils from the Derbyshire 

 and Nottinghamshire Coalfield.' By Lewis Moysey, B.A., M.B.,F.G.S. 



April 13th, 1910.— Prof. W. W. Watts, Sc.D., M.Sc, F.B.S., 



President, in the Chair. 

 The following communications were read : — 



1 . ' The Volcano of Matavanu in Savaii.' By Tempest Anderson 

 M.D.. D.Sc, F.G.S. 



Savaii is one of the German Samoan Islands in the Central Pacific 

 Ocean. It is entirely volcanic, is formed of different varieties of 

 basic lavas, and is for the most part fringed with coral reefs. 



The volcano of Matavanu was formed in 1905. The eruption was 

 at first explosive, but since the first few weeks has been mainly 

 effusive and accompanied by the discharge of an enormous volume 

 ■pi very fluid basic lava, which has run by a devious course of about 



