Notices of Memoirs—D. Stur—On British Ooal-plants. 457 
ANALYSIS OF GAULT. 
Dried at 100°C, Insoluble Residue. 
Insoluble Residue = 65°01 per cent = (Silica, SiO, = 46°43 per. cent. 
Ferric oxide, Fe,O3 = 7°92 Fe.03 = 2°05 55 
Alumina, Al,03 0 seAD Al,0, ieee ee 
Maganese oxide, MnO. = trace CaO = 0°88 8 
Lime, CaO = 5°90 MgO = 0:24 Als 
Magnesia, MgO = 0°75 = 
Sodium chloride = 0°05 + Soluble 65°01 
Phosphoric acid, P20, = 0-11 | im acid. == 
Sulphuric acid, SOs = 0:19 
Carbonic acid, CO, = 6:09 
K20, ‘and Nas,O = 0:07 
Combined water = 10-48 
99-97 
ANALYSIS OF GREENSAND. 
Dried at 100°C. 
\ Silica, SiO. ... 98°80 per cent. 
Fe,03 + Al,03 0°47 
Lime, CaO 
Magnesia, MgO 0°05 - Soluble in acid. 
inno 
S 
S 
ite) 
Sulphuric acid,SO3;= trace 
Combined water 0°42 
99°83 
INFCwBstOeS) (Ose Mirai @ab eS - 
D. Stur on British Coat-Puants. 
T.—Momentaner STANDPUNKT MEINER KENNTNISS UBER DIE 
STEINKOHLENFORMATION HENnGuanps. Von D. Srur. Jahrbuch 
der k. k. Geolog. Reichsanstalt, 1889, Ba. xxxix. [uy 2) Heft: 
pp. 1-20. 
ERR D. STUR, the Director of the Geological Survey of 
Austria, took advantage of his visit to the International 
Geological Congress last year, to study in the field and in some of the 
principal museums, the flora of the British Carboniferous strata, and 
the present paper contains in a condensed form the results of his 
observations and his views of the relative age of our different coal- 
fields, as compared with the beds on the Continent, and more 
particularly with those of the Moravian-Bohemian-Silesian area. 
The following are the conclusions arrived at by the author :— 
I. In Britain, the first or oldest Culm-flora of the Culm-roofing 
shales, specially occurs in the great Scotch basin, in the Burdie- 
House limestones, in the Carboniferous shale of Slateford, and in the 
Calciferous sandstone. In Devonshire, on the other hand, the 
Culmdackschiefer is represented by the “ Lower Culm- measures ’ 
near Bideford, whilst the “ Upper Culm-measures” belong to the 
Lower Carboniferous, and are identical with the Schatzlarer beds. 
II. The second Culm-flora, or that of the Ostrauer beds, is probably 
quite absent in England, and not a single characteristic species was 
