FROM THE TILGATE GRIT. 89 



resemblance to the larger specimen ; still it appears a dis- 

 tinct species. 



Fig. 4, which is drawn of the natural size, represents the 

 larger tooth. I'he upper portion, which is considerably curved, 

 bears all the characters of the common teeth of the crocodile 

 from the wealden formation, being deeply striated, and with 

 an elevated ridge on each side. The sirice, as usual, all com- 

 mence at an equal distance from the point ; a little below the 

 line of their commencement, the colour, which, with the ex- 

 ception of a light annular streak, had been very dark brown, 

 changes, in the rest of the tooth, to a dull white or lead co- 

 lour. This light-coloured portion or fang, is double the 

 length of the striated or upper part of the tooth : the middle 

 portion is, in some measure, inflated, and again contracts to- 

 wards the bottom. It should, however, be mentioned, that 

 the original specimen is embedded in very hard grit, which 

 covers some parts of the inner curve, so that though from the 

 appearance of what is exposed, there is little doubt that the 

 drawing is correct, yet the exact bend of the inner outline is 

 in a small degree assumed : the outer side, however, is clear- 

 ly shown, and exhibits a very regular curve almost to the bot- 

 tom. The middle part of the tooth is marked v/ith obscure 

 longitudinal s trice, and is rather flattened at the sides, in ad- 

 dition to which, on the upper side, as it lies exposed in the 

 stone, there is a slight longitudinal depression. The lower 

 part of the tooth is marked by several annular furrows, one of 

 which, near the bottom, is very deep and well defined; the 

 other three, of which one is below, and two above, are in- 

 distinct, and rather obscure. 



The smaller tooth (fig. 5) is more slender than that just 

 described. The outer curve is still more regular, and though 

 the middle portion of the tooth is slightly thicker than the 

 rest, yet the inner curve follows very closely the character of 

 the outer one. The striated portion is rather more than one 

 third of the length of the whole tooth. There is no annular 

 furrow near the bottom, as in the last specimen, but two very 

 indistinct ones just below the commencement of the striated 

 portion, and a slight annular depression, rather than a fuiTow,. 

 about half way up the fang. 



Both these specimens were found in the small quarry near 

 Battle. 



11. — Iguanodon. The teeth of this animal, as found at 

 St. Leonard's, are usually only the stumps, worn down by 

 attrition, and in most cases hollowed to mere shells by the 

 absorbent action of new teeth. On the contrary, many of 

 those which are found at Battle appear to have come fresh 



Vol. I^^— No. 38. n. s. l 



