iK PnmtlHiffgs of Philosophical Societies. [June, 



Article XV. 



Proceedings of Philosophical Societies. 



ROYAL SOCIETY. 



April 25. — On the Mechanism of the Spine, by Mr. Earle. 



Observations on the Eclipse of August, 1821, by Mr. Dawes. 



Maj/ 2. — On the Nerves which associate the Muscles of the 

 Chest in the Actions of Breathing, Speaking, and Expression, 

 .by Charles Bell, Esq. 



A short Account of some Appearances in the Moon on the 

 24th of April, by Mr. Lawson. 



Mai/ 9. — Experiments and Observations on the Ne wry Pitch- 

 stone, and on the artificial Formation of Pumice, by the Right 

 Hon. J. Knox. 



May 16. — On the Changes which the Egg undergoes during 

 Incubation, by Sir E. Home, Bart. 



Mai/ 23. — On the Mathematical Laws of Electro-magnetism, 

 by P. Barlow, Esq. 



On the Heights of Places in the Trigonometrical Survey, by 

 B. Bevan, Esq. 



GEOLOGICAL SOCIETY. 



Feb. 15. — A brief notice was read, accompanying specimens 

 of rocks from Bermuda, by Captain Vetch, MGS. &c. 



Mr. Joseph Wood's paper, on the Rocks of Attica, was read. 



March l.-^An essay on the Geology of Nice, by M. A. Risso^ 

 was read. 



Nice, the capital of the Maritime Alps, is placed at the foot 

 of an almost insulated rock on the shore of the Mediterranean. 

 The tract around the city, which is described in the present 

 paper, is bounded on the west by the river Var, and on the north 

 and east is protected by some of the last ranges of the Alps, and 

 by the calcareous summits on the shore of the Mediterranean. 

 The rocks within this tract are principally composed of lime- 

 stone ; but on the west and north-west of Nice, the surface of a 

 large district consists of clay abounding in siUceous pebbles. The 

 author describes these rocks in detail, and states their local 

 situation and boundaries. 



The calcareous tract is composed of three principal varieties 

 of rock: 1. Fine-grained compact hmestone, distinguished in 

 the country by the name of Paghone, which is of a bluish-grey 

 colour, and becomes yellowish, and ifalls to pieces by exposure. 

 It has in some places a granulated appearance, is of difficult 

 solution in nitric acid, and is not convertible into lime by calci- 

 nation; it contains the remains of a number of marine organized 



