EXPLANATION OF PLATES I. AND II. 415 



cence. The axils of the veins do not appear to have been 

 woolly. No punctures are perceptible on the cast of the 

 upper sui'face. The general contour of the end of the leaf 

 is very obtuse, and as the central tooth which ought to 

 form the apex is broken away, we cannot determine whether 

 it was prolonged into an acuminated point or not. The 

 existing portion of the margin is tooth-crenated, the teeth 

 being comparatively large and obtuse, with a minute point 

 formed by the end of the vein which traverses each of 

 them. A tooth corresponds to every vein that proceeds 

 from the mid-rib, and the sinuses between are wide, shallow 

 curves. 



A second cast, which seems to be of the same kind of 

 leaf, shews the apex rounded, without other projections 

 than the wide and not very prominent teeth. 



No. 13. 



In contact with the apex of this leaf, and partly hidden 

 by it, there is the cast of a slender seven or eight-ribbed 

 fruitstalk with the upper part broken away. Globular 

 depressions are situated alternately on the sides of this 

 fruitstalk and in contact with it. They might have been 

 produced by sessile woolly fruits of the same form with 

 those of Tilia europea, and about half the size, or by little 

 tufts of withered flowers on an interrupted spike like that 

 of the male florets of Castanea vesca, but each tuft con- 

 fined to one side of the fruitstalk, and not, as in Castanea, 

 verticillate. The exactly globular form of the cavities 

 seems to be more accordant with the casts of a fruit, while 

 their rough interior must have been produced by pubes- 

 cence or some other inequality of surface. 



No. 14. 



A rugose leaf differing from No. 12. ; has pointed teeth, 

 but the impressions are very imperfect. 

 VOL. II. E E 



