94 
E. DE C. Clabke, C. Teichebt and J. R. H. McWhae. 
Text fig. 5. 
Limestone cliff at Locality A, on the Peiiiitsula, Lake Cowan. 
Localit,, A h a miniature, almost vertical clitf of fossiliforous limestone 
extendijig- for a (juartor of a tnile. along the west side of the bay. It is 12 
feet high and IIat-toi)])ed at the southern end, but only two or three feet 
high at the northern ejid. Liko the out('roi)S at the other localities at the Pen- 
insula if shows great lateral vanation in lithology and fossil content. The 
clitf for 2(10 yards from the southern end of the outcrop is composed of 
a haul, massive, light yellow-brown limestone, of which algal fragments and 
concretions constitute as much as 40 per cent., and echinoid spines and plates, 
and rare jielecypods five ]ier eent.; the matrix is partly doloinitic and partly 
ferruginous. For the next lOO yards farther north small peleeypods are 
veiy numerous, but Bryozoa and a feAv gastropods and brachiopods also 
occur. Ihe section here is 12 feet thick and shows distinct vertical valua- 
tion in colour and texture. Lensing bauds of shell grit compose the upper 
five leet, well-iireserved fossils being found only in the lower seven feet. 
For the next oO yai'ds tarther north the rock is a doloinitic limestone, being’ 
made up in great part of Bryozoa "with very subordinate numlicrs of 
brachiopods nnd echinoids. The expose<l thickness of this bryozoan lime- 
stone is between four and live feet. Outcrops are discontinuous farther 
to the north, where algal concretions with less frequent gastropods and 
