206 Abstract of Foreign Memoirs. 
and Lagena ovalis, Kaufmann, which are common species in the 
White Chalk of England, and the ‘Danian’ of Seeven ; but the 
latter two make their first appearance in the Gault. The limestones 
of the Nummulitic formation constitute the major part of the Eocene 
System that is seen in the neighbourhood of Mentone: they are 
charged with Nummulites perforata, D’Orb. ; N. Lucasana, Defr. ; 
NN. Brongniarti, D’Arch. (?); WW. Ramondi, Defr.; MN. Guettardi, 
D’Arch.; WV. exponens, Sow.; N. granulosa, D’Arch.; NV. mamillata, 
D’Arch., and JV. spira, De B.(?) ; and Opercularia ammonea, Leym., 
and Turritella imbricataria, Lamk. Grey clays of great thickness, 
surmounted by compact conglomerates, contain twenty-five species 
of fossils characteristic of the Upper Pliocene (‘ Plaisancien’). 
Inversion of Cretaceous upon Tertiary Strata near Mentone. 
1, Nummulitic Beds (Tertiary). 2. Upper and Middle Cretaceous Beds. 
3. Lower Cretaceous Beds. * Fault. 
One of the chief points of interest in this pamphlet is that fur- 
nished by a part of the section in the plate accompanying the work, 
representing an inversion of the strata, namely, Cretaceous beds 
thrown over upon the Eocene.—R. T. 
REVIEWS. 
—_+—_——_- 
poe AMERICAN JOURNAL OF SCIENCE AND Arts, conducted by 
Professors B. Silliman, B. Silliman, jun., and J. D. Dana, 2nd 
Ser. No. 113, Sept. 1864, is rich with geological information, as is usual 
with this well-known and valued periodical. Prof. KE. W. Evans de- 
scribes the action of Oil-wells in the coal-regions of South Ohio and 
Western Virginia, based on Prof. Andrews’ hypothesis of many of 
the borings tapping either the bottom, middle, or the top of cavities 
occupied by gas, oil, or water, highly compressed. Mr. Sterry 
Hunt continues his ‘ Contributions to Lithology,’ describing certain 
Dolerites (anorthic felspars with augite) and Diorites (anorthic fel- 
