384 SOLIPEDIA. 



Paviland ; by Mr. Lyell * in the tertiary deposits on 

 the Norfolk coast ; by Col. Hamilton Smith -f in the 

 bone-caves near Torquay ; and by Mr. Morris j in the 

 Mammaliferous deposits in the valley of the Thames, as 

 at Wickham, Ilford, Erith, Grays, and Kingsland. Cu- 

 vier records many instances of the like association of a 

 Horse with the undoubted extinct species of Mammals 

 in the corresponding formations on the continent. 



No critical anatomical comparison appears hitherto to 

 have been instituted with regard to the relations of these 

 British equine fossils with the existing species. That 

 the fossils vary in size amongst themselves has been more 

 than once noticed ; and Dr. Buckland makes a remark 

 expressive of his suspicion that they belonged to more 

 than one species. 



The largest-sized fossil Equus from British strata is indi- 

 cated by molar teeth, obtained by Mr. Lyell from a bed 

 of laminated blue clay, with pyrites, eight feet thick, 

 overlying the Norwich crag at Cromer, where they are 

 associated with remains of the Mammoth, Hippopotamus, 

 Rhinoceros, Bos, Cervus, and Trogontherium. The antero- 

 posterior diameter of one of these teeth, the second in the 

 lower jaw, was one inch four-tenths, equalling that of the 

 largest dray-horse of the present day : other correspond- 

 ing fossil teeth of Equus have measured in the same dia- 

 meter, some one inch two-tenths, and some one inch. The 

 intermediate size, which equals that of the teeth of a 

 horse of between fourteen and fifteen hands high, is the 



* 'Phil. Mag.' vol. xvi. (1840.) pp. 349, 362. 



f* 'Naturalist's Library,' Horses, p. 63. 



J ' Mag. of Nat. History,' 1838, p. 539. 



Loc. cit. p. 75, with respect to the equine remains discovered in the Oreston 

 caverns : " Horses about twelve, of different ages and sizes, as if from more than 

 one species." 



