THE MARYLAND CYCADS. 463 



hard and more or less crystalline, generally of a dark-reddish color, but 

 lighter where freshly broken, and rather heavy. In its longest dimen- 

 sion, which is nearly along the oblique radial fracture, it is 30 cm. The 

 width at right angles to this is 16 cm. The length of the axis running 

 obliquely across this face is 15 cm. The maximum measurements over 

 the curved outer surface are 21 cm. by 36 cm. A polished section is 

 shown on PL CIII. (Locality: PI. LXXX, No. 59a.) 



PL LXXXVII, Fig. Ill, 5, is a view of the best preserved broad side 

 of the Carr trunk, W. C, B., No. 1463. It shows the terminal bud, but 

 not so well as it is shown on pi. Ix, fig. 8, of the Nineteenth Annual Report 

 of the United States Geological Survey, Pt. II. 



This specimen consists of the upper portion, probably more than half, 

 of a verj^ much laterally compressed cycad. The compression is greatest 

 in the central portions, but the thinnest place is not opposite the medulla, 

 but on one side of it. The specimen is much worn on all sides, but enough 

 is left to show that it was originally covered with the usual appendicular 

 organs. The fracture is oblique, so as to make both the sides and ends 

 unequal. The most important feature of the specimen is the smooth-worn 

 but still well-preserved terminal bud, which rises nearly 3 cm. above the 

 otherwise fiat general surface of the trunk in the form of a small cone about 

 5 cm. in diameter at the base. It is slightly flattened at the apex, which 

 may have been due to injury. Bract scars occur around its base, but not 

 on the rest of the summit of the trunk. This indicates greater wear at a 

 short distance from the bud, and shows that the latter was originally set in 

 a depression or crow's-nest. 



The. trunk is of a light color and firm consistence and of high specific 

 gravity. The height, including the terminal bud, is 21 cm. measured on 

 the median line, but one of the lower sides extends 4 cm. lower, making a 

 total of preserved substance of 25 cm. This is also about the length of the 

 longer edge, while the shorter edge is only half as great. The total length 

 of the oblique fracture is nearly 32 cm., but the major axis at the lowest 

 point at which it can be measured is 25 cm. Judging from the rate of 

 contraction, that of the lowest point repi'esented would have been 33 cm., 

 and the maximum might have been somewhat greater than this. The 

 minor axis varies from 7 cm. at the thinnest place to 13 cm. at the summit, 

 where it is thickest. The girth at the lowest place attainable is 74 cm. 



