72 Catalogue Raisonne. 



Memoir e stir le Fait, Sfc. Memoir on the Facts of the Division 

 of Formations, into a great number of beds of different characters. 

 By JoBERT, Senior. — Ann. des Sciences Naturelles, Nov. 1829. 



If we admit that the formations of fresh water have been found in the 

 lakes that deposited successive mineral beds, we are led by reasoning to 

 seek for the ancient borders of these lakes. We may even conceive it 

 possible to determine their primitive depth, and to fix the level of the Waters. 

 Mr. Jobert, considering the most universal ingredient of the deposits in 

 the essential base, establishes that the successive precipitation of the 

 lacustrine marks has been troubled at nearly periodical intervals. The 

 cause is represented by the shales and sandstones ; and, in the absence of 

 these, by the line of separation of the calcareous beds. 



The author considers tliat the calcareous matter of the tertiary forma- 

 tions has been furnished from the interior, brought to the surface by 

 springs, and spread in the basins. The sandstones and shales he considers 

 to be derived from superficial decomposition, and carried away by atmos- 

 pherical waters. Thus, by admitting alternate dry seasons and seasons 

 of rain, we should have the key of these phenomena. The theoretical 

 opinions are supported by some remarkable analogies. 



Considerations Theoriques, S^c. Theoretical Considerations on 

 the Caverns with Bones, at Bize near Narbonne, (Aude) ; and on 

 the Human Bones found mingled with the remains of Animals be- 

 longing to lost species. By Mr. Tournal, Jun. — Ibid. 



The researches of Mr. Christol have confirmed the opinion that the 

 existence of man had not been separated from that of lost species of ani- 

 mals ; and, further, that he had lived with much more ancient speciesj 

 which would characterize the antediluvian population. The caverns of Bize, 

 like those of Gard, contain species of lost animals mingled with human 

 bones and pottery ; but those of Bize having been filled after those of Gard, 

 present a different population, having greater analogies with that of the 

 present epoch. Mr. Tournal adopts the opinion of Constant Prevost, and 

 thinks that it is quite unnecessary to have recourse to catastrophes and 

 supernatural phenomena to explain such simple effects. 



On the Falls of the Niagara, and on the Physical Structure of 

 the Adjacent Country. By Mr. Bobert Bakewell, Jun. — 

 Loudon's Magazine of Nattiral History, No. XII. 



The formations between lakes Erie and Ontario consist of close-grained 

 and subcrystalline gray limestone, a dark argillaceous limestone and shale 

 beneath. The limestone precipices arc covered with alluvial sands. Mr. 

 Bakewell, on the authority of a gentleman residing in the vicinity, states, 

 that the falls have, within these last forty years, receded from 40 to 50 

 yards. The distance from Lake Eri^ to the Falls is 25 miles, from the 

 Falls to Lake Ontario T, which if the above maximum of the ratio were 

 constant, would give 9850 years for the period in which they have been 

 retrograding to where they now are. The paper is illustrated by interesting 

 sketches. 



Annuaire du Bureau des Longitudes, for the year 1830. Paris. 



In addition to the ordinary information on tides, measures, weights, and 

 coins, which this iiseful annual usually contains, seme interesting docu- 

 ments on mortality, and on the changes of population in Paris, and in 



