150 Seventific Intelligence. 
170 feet an oyster-bed was formerly visible. 
mong the species of Mammals identified by Messrs. Busk and 
given as follows: 
(1.) Great unfossiliferous limestone-agglomerate of Buena 
Vista, ete—Land o greater extent than now; winters very 
cold; Gibraltar apparently not tenanted by the Quaternary 
Mammalia, 
(2.) Caves and fissures with bone-breccia.—Land of greater 
extent than now; Europe and Africa united; climate genial; 
immigration of the African Mammalia. 
3.) Platforms or terraces of marine erosion (in part), cal- 
0 
eet below present level; movement interrupted by pauses of 
longer or shorter duration; climate apparently much the same 
as now. 
(4.) Platforms of marine erosion (in part); Alameda Sands; 
Sormation of sand-slopes on east coast, as at Monkey’s Cave; 
mammalian remains under beach or later limestone-agglomerate 
(perhaps cave-deposits in 2 dams cag land of greater 
extent than now (Africa and Europe perhaps reunited) ; climate 
probably genial. 
(5.) dite limestone-agglomerates resting upon and obscuring 
erosion-terraces and sand-slopes, ete. — Geographical conditions 
probably same as during part of 4; winter considerably more 
severe than now. fi 
ha The present.—Characterized by the absence of the action 
ot frost. 
6. iques de Géologie Expérimental, par A. 
Davsrk, Membre de L’Institut, Inspecteur Général des Mines, 
iére Partie, A 
these results in full, and, in addition, those 
