Coal Measure sandstones from the Carboniferous of Belgium and for the group of Molasse sandstones. Downloaded...with opaline cement, Cenomanian of Bracquegnies, Belgium (Cayeux, 1929, p. 130) 3. Sand with opaline cement...cement (glauconitic) Thanetian (Tertiary) of Angre, Belgium (Cayeux, 1929, p. 130) 4. Sand with chalcedony...chalcedony cement, Ypresian (Tertiary) of Mont Panisel, Belgium (Cayeux, 1929, p. 132) 5. Quartzite of Fontainebleau...Charleroi, Belgium (Cayeux, 1929, p. 176) 15. Hornu and Wasmes sandstone (Coal Measures), Belgium (Cayeux
clay minerals A. F. SEAGER: The morphology of the baryte group . 0. voN KI~OI~RINO: Helvine from a lithium...crystallographic c'~lculations O. vo• KNOW.INn and G. HoRNu~a: Holmquistite from Southern Rhodesia (a correction)
hollow trees. having passed the winter in mr HornU ’ Ger-’ is common The females torpidity, early...serpentine, at in New Jersey. Genus III.— BARYTES. Baryte, Ft. The arite, It,-, Baryterde; Schwerde,... Sp. fig. — 2 .) 1. Sulphate of Barytes, —Baryte or sulphate crystalizee, Heavy-Spar. — (Pl