EXPLANATION OF PLATES I. AND II. 407 



calix. None of these impressions are, however, above one- 

 fourth of the size of a nearly ripe seed of the common yew. 

 They are compressed, ovate, and acute, without a promi- 

 nent point, and all of them shew a faint furrow descend- 

 ing on each side from the apex, more acute than the im- 

 pression which would be made by the slight ridges on 

 that part of the yew seed, which is only very slightly 

 compressed. Several shew indications of an imvestment 

 at the base, and in one impression the soft integument of 

 the fruit seems to have been pressed aside so as to allow a 

 cast to have been made of the nut within it. This pulp 

 enveloped the nut entirely ; or, if an opening like that of 

 the calix of a yew-berry existed, it must have been oblite- 

 rated by pressure. The solitary fruit attached to a twig 

 of No. 1, is inclined downwards on a very short fruitstalk. 



No. 3. 



Some imperfect casts also exist of a plant, most probably 

 belonging to the family Ericacece, and approaching nearly 

 to Vaccinium. Some of the casts shew a five-parted, or 

 five-leaved calix, composed of thick ovate acuminate sepals 

 meeting at the apex. In two others a berry seems to 

 have been crushed, leaving a flat floor of minute, very 

 numerous seeds, partially covered with integument or 

 pulp. There are also impressions which may have been 

 produced by an urceolate corolla. These flowers grew on 

 short fruitstalks, springing apparently solitarily from the 

 axils of the leaves. As far as the form of the leaves can 

 be made out, they are linear lanceolate, narrow, but scarcely 

 acute at the point, with a concave surface and a not very 

 prominent mid-rib. The leaves are approximated, appa- 

 rently not in any regular order, applied to the stem at 

 their bases, and curving outwards at the tips with a 

 sigmoid flexure. They are rather more than a quarter 

 of an inch long, and the height of the swollen calix or 

 corolla is about as much. 



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