408 Sir Philip Egerton, Bart. — Typical Fossil Fishes. 



water to excavate the latter. The accompanying sketch of one of 

 the hills in the Barony of Burren, Co. Clare, shows this class of 



Fig. 3. — Recent Drift banked on a hill-slope below an escarpment. 



drift-bank. If it is insisted on that the valleys must have been cut 

 by streams, it seems impossible to account for their formation, as 

 there is no water-table on which a head of water could collect. 

 To me, however, it appears evident that there was a certain 

 amount of rain and river action, and a certain amount of mete- 

 oric abrasion ; but the carrying power {i.e. the first named) not 

 being equal to the abrading force, the drift was not conveyed 

 away — the little water there was must find a way somewhere, there- 

 fore, in the first instance, it flowed over the lowest places in the 

 escarpment, and afterwards, by the accumulation of the drift, it was 

 concentrated in those places and thereby was enabled to keep the 

 hollows clear of drift and mould the ridge to their present form. 



Grlaciers act somewhat similarly to streams, for the debris brought 

 down by the meteoric abrasion and shedding into a valley, the centre 

 of which is occupied by a glacier, is banked up in ridges outside the 

 margin of the ice-stream.^ And Marine action has, to some extent, a 

 like poY/er ; for much of the debris, carried down by rivers, is thrown 

 up in banks, instead of being spread out evenly over the bed of the 

 ocean. 



VI. — Alphabetical Catalogue of Type Specimens of Fossil 

 Fishes in the Collection of Sir Philip de Malpas Grey 

 Egerton, Bart., M.P., at Oulton Park. 



The object of the accompanying list of Fossil Fishes is merely to 

 record, for future palaeontologists, the depository of a few specimens 

 which have furnished the materials for descriptions and figures of 

 species recorded in the publications of the day. They are available 

 for inspection to any one who may be interested in their examina- 

 tion, and I am only too happy when I can induce any geological 

 or palaeontological students to come and see them. — P. M. G. E. 



Acanthoderma, Kg. 

 — spmosum, Ag. P. F., torn. 2, pt. 2, tab. 75, fig. 4. (Counterpart.) 



^ See Dr. Hayes's description of the Greenland Glacier " Open Polar-sea ; " Dr. 

 Hooker on the Glacier in the Valleys of the Himalaya ; etc. 



