Scientific Intelligence t >— Geology. 871 
depth and width, and surpass it in length, in the proportion of a 
hundred to fifty miles. 
GEOLOGY* 
11. Geognostical Observations by Dr Boue. — 1. He has not seen 
or heard of any shell limestone, true red marl (tod liegende), 
or quadersandstone, or magnesian limestone (zechstein), in the 
whole extent of the Apennines. Sandstone, of the coal forma- 
tion, is said to occur near Pestum, and the white Apennine lime- 
stone, extending from Pome to Calabria, appears, in general, to 
belong to the third floetz, or Jura-limestone. 2. The sulphur of 
the Apennines is not in grey wacke, as mentioned in the Synopti- 
cal Table published in the preceding number of this Journal; but 
the great deposit of sulphur, compact and fibrous gypsum, and 
even of salt, are situated in tertiary clay, as may be seen near to 
Vol terra in Tuscany ; and the same will be the case in Sicily *. 
3, Dr Boue observes, that there is a gradual transition from tal- 
cose mica-slate to some granular foliated limestones or marbles, 
and from these to compact black marble, shale, and the common 
alternations of the calcareous greywacke, and sandy limestones 
of the Apennines, in Tuscany and Eastern Liguria. Such 
transitions are well seen between Genoa and Nice. This grey- 
wacke he believes to be the same as that which he met with on 
the north side of the Alps, in Austria, and in the Carpathians, 
and which he has inserted in his synoptical table as red marl, or 
one of its equivalents. This view is further supported, by the 
fact of the occurrence of serpentine in the grey wacke of Liguria 
and Tuscany. , Dr Boue adds, 66 It will therefore be advisable, 
in the mean time, that we consider all the deposits referred to 
the new red sandstone, and placed in his synoptical table , un- 
der the head North Alps, Carpathians, Apennines, and Capel- 
lengebirge, as belonging rather to a newer greywacke, than to 
new red sandstone ; and if this arrangement be correct (for it is 
still beset with difficulties), the whole mass of limestone and do- 
lomite, of the Northern Alps, put under the head Zechstein, or 
* In Dr Daubeny’s excellent Memoir on Sicily, published in this and the pre- 
ceding Number of this Journal, it is shewn, that the sulphur of Sicily is of tertiary 
formation.— Edit. 
