468 MESOZOIC FLORAS OF UNITED STATES. 



PL LXXXIX, Fig. II, 5 shows well the perfect side of the David 

 Ring trunk, W. C, B., No. 6357. This is neaiij^ half of a small trunk 

 with small scars, type of W. C, B., Xo. 1478, but still smaller. Besides 

 the longitudinal fracture which has carried away most of the axis, leaving 

 a hollow trough showing markings of the inner wall of the woody zone, 

 there is a transverse fracture at each end, probably near the base and 

 summit. It is 25 cm. high and 21 cm. in diameter, which was nearly 

 that of the trunk. (Locahty: PL LXXX, No. 55.) 



PL LXXXIX, Fig. II, 6 shows, lying on its side, the worn outer 

 surface of the Allen fragment. No. 2, M. G. S.-W. C, B., No. 9048. 



This is a trough-shaped fragment showing probably almost the whole 

 length of one side of a small cylindrical trunk, the hollow interior barely 

 reaching the medulla, and showing the markings of the inner wall of the 

 woody zone. The external surface is badly worn, and the whole specimen 

 is stained reddish brown by contact with paint stone. Neither base nor 

 summit is preserved. The height is 34 cm. and the tangential diameter 

 is 15 cm. The true diameter could scarcelj^ have exceeded 16 cm. (Lo- 

 cality: PL LXXX, near No. 101.) 



PL CI represents the Polly Jones trunk, W. C, B., No. 1427, in its 

 proper position, or standing on its base.' It is from a photograph taken 

 b}^ the Woman's College. This specimen has been taken as the principal 

 type of the species. It probably constitutes the greater part of the 

 original trunk, but portions of both base and summit are wanting. It 

 stands 50 cm. high on the longest side. The base being somewhat 

 oblique the vertical length of the shorter side is only 40 cm. The size 

 is nearly uniform for all points and the girth is approximately 1 meter. 

 It is very much flattened longitudinalh^, and more so at the top than at 

 the bottom, so that, looked at from the broad side, it seems to expand 

 slightly upward. The long diameter is at the base about 40 cm. and at 

 the summit 43 cm. The short axis is about 16 cm. at the base. At the 

 summit the compression is greatest in the middle, forming a sort of 

 groove on both sides, but deeper on one side than on the other. A cross 

 section of the trunk would therefore be somewhat irregularly fiddle 

 shaped, and the minor axis would measure 12 cm. in the middle and 14 

 cm. at either end. 



The specimen is thoroughly silicified and very heavy. It is of a 

 brownish-gray color, darker below. The external surface is very little 



