446 JIESO/OIC FLORAS OF rMTKD STATES. 



The specinuMi is much Hghter coloi-ed lliaii most of those from 

 the iron-ore beds. It is thoroughly silicified and moderately hard and 

 heavy. It is 15 cm. long (high) and 5 cm. in radial direction. (Local- 

 ity: PI. LXXX, Xo. 106.) 



PI. LXXXVII, Fig. V. 21, represents the 1{. T. Donaldson frag- 

 ment, Xo. 1. W. C, B., Xo. 1473. This is a small fragment of what 

 may properly l)e called bark — that is, liljer and armor. It is 16 cm. 

 long, 65 mm. wide, and 4 cm. thick, and triangular in shape. The 

 markings on the inner surface are distinct and consist of elevated and 

 somewhat rhoml)ic scars terminating in a prolonged ridge tapering to 

 a point. (Locality: PL LXXX, near Xo. 106.) 



PI. LXXXIX, Fig. I, 1, shows the Whitehead trunk, Xo. 2, M. G. S.- 

 W. C, B., Xo. 9051, lying on its side and exhibiting the exposed medulla 

 and adherent armor, the base being at the right. It embraces con- 

 siderable of the low^er part of a fair-sized trunk of doubtful affinity, 

 somewhat resembling W. C, B., Xo. 1488, but harder and heavier. One 

 side is eroded or decayed to the medulla, and both the liase and sum- 

 mit are wanting, Ijut the former could not have been far away. It is 

 23 cm. high, oblique in the same direction below and above, 23 cm. in 

 larger and 15 cm. in smaller diameter, this latter not complete. It has 

 a girth of 64 cm. (Locality: PI. LXXX, near Xo. 105.) 



PI. LXXXIX, Fig. HI, 1, is a \dew of the R. T. Donaldson frag- 

 ment, Xo. 10, M. G. S.-W. C, B., Xo. 9053. It is 10 cm. long, 8 cm. 

 wide, and 5 cm. thick, and shows a few scars and reproductive organs. 

 (Locality: PL LXXX, Xo. 106.) 



PL LXXXIX, Fig. Ill, 3, is a surface view^ of the Marlowe frag- 

 ment, Xo. 3, M. G. S.-W. C, B., Xo. 9061. It has an area of surface 

 6 cm. l:)y 10 cm., showing scars of leaves and fruits, and extends 6 cm. 

 inward to the woody zone. (Locality: PL LXXX, Xo. 100.) 



PI. LXXXIX, Fig. Ill, 6 show^s faintly, because somewhat out of 

 focus, the side of the Pt. T. Donaldson fragment, Xo. 15, M. G. S.-W. C, 

 B., Xo. 9062. It consists of a small piece, chiefly of armor, 11 cm. high, 

 12 cm. wide, and 4 cm. thick, and having the same kind of matted and 

 obscured surface as W. C, B., Xo. 3347, which it also resembles in other 

 respects. (Locality: PL LXXX, Xo. 106.) 



PL LXXXIX, Fig. Ill, 7 represents the R. T. Donaldson fragment, 

 Xo. 16, M. G. S.-W. C, B., Xo. 9064, a peculiar spongy-looking fragment. 



