164 Geological Society : — 



ducts into which it is decomposed, leave no doubt regarding its 

 position in the system. 



This compound is formed by the action of cyauate of phenyle upon 

 either water or phenylamine. 



2 [$S5 } N ] + H } = (COrO + (c| 5 ) 2 JN 2 , 



(CO)" 

 (C 6 H 5 ) 



C 6 H 5 ^ (CO)" "I 



N + H >N=(C H 5 ) 2 >N 2 . 

 HJ H 2 J 



When boiled with potassa, it splits into carbonic acid and phenyl- 

 amine. 



(C G H 6 ) 2 >N 2 + JJ >0 = (CO)"0 + 2 H >N . 

 H 2 J H J L HJ J 



These are the characters of true diphenyl-urea. 



GEOLOGICAL SOCIETY. 

 [Continued from p. 78.J 



May 8, 1861. — Leonard Horner, Esq., President, in the Chair. 



The following communications were read : — 



I. "Description of two Bone-caves in the Mountain of Ker, at 

 Massat, in the Department of the Arriege." By M. Alfred Fontan. 

 Communicated by M. E. Lartet, For. Mem. G.S. 



The valley of Massat, on the northern side of the Pyrenees, is of a 

 triangular shape, its northern angle being narrowed by the projecting 

 limestone mountain of Ker. Among the fissures and grottos that 

 traverse this mountain in every direction are two caves in particular : 

 one is situated near the top, at about 100 metres above the valley; 

 the other is near the base, at about 20 metres above the river. They 

 both open towards the north. In the upper cave M. Fontan found 

 a sandy loam with pebbles (the pebbles being of rocks different from 

 that of the mountain), extending inwards for 100 metres, and con- 

 taining a large quantity of bones of Carnivora, Ruminant ia, and 

 Rodentia, — those of the great Cave-bear, a large Ht/cena, and a large 

 Felis being the most numerous. On the surface some fragments of 

 pottery, an iron poignard, and two Roman coins were found, with a 

 quantity of cinders and charcoal ; and at a depth of more than 3 

 feet in the ossiferous loam another bed of cinders and charcoal was 

 met with, and in this M. Fontan found a bone arrow-head and two 

 human teeth ; the latter were at a distance of 5 or 6 metres one 

 from the other. 



In the lower cavern a blackish earth, with large granitic and other 

 pebbles, was found to contain bones of the Red Deer, Antelope, 



