MASTODON ANGUSTIDENS. 275 



land, and hitherto exclusively in these deposits, consisting of 

 sand, shingle, loam, and laminated clay, containing an inter- 

 mixture of the shells of terrestrial, fresh- water, and marine 

 mollusca, which extend along the coast of Norfolk and 

 Suffolk, and have been so admirably described by Mr. Lyell 

 under the name of the "fluvio-marine crag," and referred 

 to the " older pliocene " division of his tertiary system. 



The first representation of any fossil relic of a Mastodon 

 from English strata, was given by the father of English Geo- 

 logy, William Smith ; it forms the frontispiece of his famous 

 4to work, ' Strata identified by Organised Fossils,' 1816, 

 and is a coloured engraving of the natural size of the last 

 molar tooth of the upper jaw of the Mastodon angmtidens. 



Cuvier has given figures of the corresponding tooth of 

 the Mastodon angustidens, from three individuals of diffe- 

 rent ages, and from three different localities, in his ' Osse- 

 mens Fossiles," 1 4to. 1821, vol. i. The first ' Divers Mas- 

 todontes,' (pi. i. fig. 5,) is a young tooth, the udder-shaped 

 processes of the crown being unworn, and the fangs not 

 developed ; from the tertiary deposits at Trevoux : the 

 second specimen, (pi. i. fig. 6,) with the two anterior pairs 

 of mammillae worn down, is from Peru : the third, (pi. ii. 

 fig. 10,) having the summits of all ~the five pairs of mam- 

 millse abraded, and the roots of the crown fully developed, 

 is stated to have been from the collection of M. Hammer, 

 and was most probably a German specimen ; each of these 

 molar teeth is referred by Cuvier to his narrow-toothed 

 species, " Mastodonte a dents etroites." 



If the subjoined cut (fig. 97,) of the tooth figured by 

 Mr. Smith, be compared with the Cuvierian figures above 

 cited, the specific identity will be readily recognised. The 

 figures in the ' Ossemens Fossiles ' are reduced one half, 

 and, like Mr. Smith's figure, are drawn in a position the 



