TIIK MARYLAND CYCADS. 427 



iiess 10 ('111., more oi' loss. Tlio air of the outer surfaee measures 25 

 cm.; that of the inner surfaee ahoiil Hi em. (l.oeahty: PI. LXXX, 

 No. lOG.) 



PI. LXXXMI, I'iir. i\', 13 shows most of one side of the Tul)bs 

 frajiment, \V. ('., B., Xo. 1192, the first specimen obtained by Mr. Bib- 

 bins. It is a small segment from the side of wliat seems to have l)een 

 a large trunk. .V surface view of the fragment is somewhat wedge 

 shaped, the smaller end downward and truncated. This surface is very 

 much worn, so mvicli so on one side as to liave neai'ly ol)literated all 

 the markings. On the inner side i1 consists of a triangular segment 

 of the woody zone sloping upward and downwai'd and presenting a 

 sharp inner edge horizontally across the specimen. The color of the 

 outer parts is a lively red, such as that of the paint stones and clays 

 of the iron-ore Ijelt. Internally it is light colored. The substance is 

 hard and fine grained, giving it a high specific gravity-. The height 

 is 18 cm., the maximum lateral siuface shown, including a slight curva- 

 ture, 19 cm., while below it is only 10 cm. across. The radial distance 

 from the surface to the sharp ridge above described is 12 cm. (Locality: 

 PL LXXX, Xo. 46.) 



PI. LXXXVII, Fig. IV, 14, represents the Morgan trunk, or rather 

 fragment, W. C, B., X^o. 3051, a somewhat triangular fragment from 

 the thin side of a vertically compressed trunk, the tangential and radial 

 fractures being at right angles and passing through the armor into the 

 woody zone. The color is whitish pink, very delicate, unlike that of 

 an\' other specimen in the collection. The substance is rather soft and 

 friable. The maximum length in a tangential direction is 21 cm., the 

 radial thickness 13 cm., and the third dimension or vertical thickness is 

 12 cm. The fractvu-e in this last direction is triangular, being parallel 

 to the leaf l)ases on each side, forming a sharp ridge of wood within. 

 Twenty-four centimeters of the circumference is pi'eserved and the dis- 

 tance from bottom to top over the curved svu-face is the same. (Locality: 

 "Anne Arundel County.") 



PI. LXXXVII, Fig. v, 2, shows the Harrison fragment, W. C, B., 

 Xo. 1486. It is a small fragment consisting entir(>ly of the armor or 

 bark from the side of a trunk of unknown dimensions. It is very well 

 preserved, is of a brown color without and much lighter within, soft, 



