48 HULL SCIENTIFIC AND FIELD NATURALISTS’ CLUB. 
sandstone and limestone, Permian ‘“ Brockram,” Magnesian 
limestone, Triassic sandstone, Liassic, Oolitic, Speeton clay and 
Chalk pebbles and fossils. In fact anyone requiring a maximum 
variety of rock specimens for a minimum amount of labour 
should go to Burstwick or Kelsey Hill. 
I have just shewn that there are great differences between these 
glacial mounds and the pre-glacial beds at Hessle. But besides 
the differences already noted there are others of some importance. 
At Burstwick numerous shells of a somewhat Arctic type are 
mixed with the gravels, a list of twenty-three species having 
been compiled,* whilst at Kelsey Hill, close by, in a precisely 
similar bed, forty-nine species have been collected.+ In associa- 
tion with these marine shells are quantities of an interesting 
fresh-water mollusc, Cyrena fluminalis. Then mammalian 
remains, principally bones, horns and teeth, occur at Burst- 
wick fairly plentifully, but usually in a very fragmentary and 
waterworn condition, often being like pebbles. A _ notable 
exception to this, however, is a huge mammoth tooth, measuring 
fourteen inches in length, which I obtained recently. Up to the 
time the paper on the Burstwick gravel pit, to which I have already 
referred, was read, no remains of the mammoth had been 
obtained from that pit. The list, therefore, now stands as under: 
Megaceros Hibernicus (Irish “ Elk”), 
Cervus elaphus (Red Deer), 
Bos primigenius (Urus of Czesar), 
Bos taurus (Ox), 
fTyena (? Indicated by gnawings), 
Elephas primigenius (Mammoth). 
The following is a list of the remains of animals found at 
Kelsey Hillt: 
LElephas primigenius (Mammoth), 
Cervus tarandus (Reindeer), 
Bison priscus (Bison), 
Rhinoceros leptorhinus (Rhinoceros). 
Trichechus rosmarus (Walrus). 
To account for the origin of these gravels I will quote a 
paragraph from a previous paper § 
“The various boulders found in the gravel seem to indicate 
* ‘On another Section in the so-called Inter-Glacial Gravels of Holder- 
ness,” by the present writer. Proceedings, Yorks. Geol. and Polyt. Soc., 
1895, page 6. 
t+ Reid; op. cit. p. 71. 
+ Reid’s ‘‘ Holderness,” p. 71. 
§ ‘*On another Section in the so-called Inter-Glacial Gravels of Holder- 
ness,” op. cit., page II. 
