114 TRANSACTIONS OF THE [Frx. 23 
often constitutes their walls, is left unshaded ; the light yellow 
phosphorite is indicated by a faint shading, and the brown 
amorphous phosphate by a darker shade. In a few of the 
bodies, minute round grains of carbonaceous matter also occur, 
though the general absence of any organic matter visible to the 
eye is rather remarkable, considering the abundance of fossils 
in this seam, and the little altered character of the beds. 
The identification of the figures, as far as made, is by my 
father, G. F. Matthew. 
Prats 3. Figs. 5, 7, and 8 are probably Foraminifera, The 
rest are Monadites. 
