140 REPORTS ON THE STATE OF SCIENCE.—1912. 
The fauna of the included blocks is clearly Lower Cambrian, and 
the same as that found in the Olenellus-Limestone of the Comley 
Quarry. 
The matrix contains many species of a Puradozides fauna which 
appears to be new to the district, and which, from the presence of 
Conocoryphe equalis (Linnarsson) and a Liostracus, seems to indicate 
a higher horizon of the Middle Cambrian than that of the conglomeratic 
base of the Quarry Ridge Grits, which is in contact with the Lower 
Cambrian in the Comley Quarry and in Robin’s Tump. 
The finding of specimens of Olenellus (or rather of Callavia) and 
other members of the Lower Cambrian fauna in close contact with 
fragments of Puradozides is no new thing in the district, for fossili- 
ferou pebbles are not infrequent, both at the Quarry and at Robin’s 
Tump,\in the conglomeratic base of the Quarry Ridge Grits (Middle 
Cambrisn); but in those places the distinction between matrix and 
included blocks is obvious, owing to the admixture of numerous rounded 
grains of quartz and other pre-existing rocks, while here, at Excavation 
No. 49, the distinction could hardly have been made out without the 
presence of the fossils. 
The section in descending order is as saiidwed? — 
(a) Grits and shale, of undetermined horizon :— Ft. 
(a,) Hard ringing grit, top not seen P . P : show 
(a) Brownish shale, much crushed : : ; : ae 
Probable fault 
Wo) the Breeemrtien ae ory fs yk st a ty ope ee ee 
(c) Lower Comley Sandstone :-— 
(c,) Green sandstone, flaggy and reddish in places 3 
(€2) 33 iE compact 4 
(cs) Be 33 soft and much broken 4 
(C4) BA 55 harder and more compact 3 
(5) af broken, base not seen . 3 
The dip is about 45° to the south-west. 
Up to the present fossils have only been found in the Breccia bed, 
they are given below in two lists—(A) those derived from the matrix, 
Middle Cambrian; (B) those derived from thé included blocks, Lower 
Cambrian :— 
(A)—From tHE Marnrix. i 
* Paradoxides, sp., cf. P. Hicksti (Salter), and P, Sjogren (Linnarsson) 
(Pygidia and free cheeks). 
* P., sp., cf. P. rugulosus Corda (Glabella). 
P., sp. indet., various fragments. 
Agraulos, cf. A. quadrangularis (Whitfield). 
Conocoryphe bufo (Hicks). 
C. cequalis (Linnarsson). 
C. impressa (Linnarsson). 
Dorypyge, sp. nov., with a reticulate test. 
Microdiscus punctatus (Salter). 
Ptychoparia (Liostracus) sp. allied to Pt. (L.) pulchella (Cobbold). 
Hyolithellus, sp., a large form, similar to that from the Quarry Ridge Grits. 
Kutorgina cingulata (Billings) ? 
Acrothele, cf. A. granulata (Linnarsson), a fragment. 
Linnarssonia (7) 
* Since this report was written better specimens have been found, indicating 
a distinct species of Paradoxides intermediate between the three species here 
mentioned. 
