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PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Mar. 21, 



double rows of oval scars commence, which at first incline consider- 

 ably to the right, but soon take a vertical direction and run exactly 

 parallel to each other. There are no traces of longitudinal furrows, 

 either upon the bark or the decorticated stem. The intervals between 

 each pair of scars swell outwards, the raised spaces being exactly 

 under the projecting wrinkles on the surface of the bark, as showTi in 

 fig. 2, which is a vertical section, of the natural size, in the direction 

 of one of the double rows of leaf-scars, d, e being the bark, and/, g 

 the deep indentations on the decorticated stem. 



Fig. 2. Fig. 4. 



Fig. 5. 



The inner surface of the bark is covered with minute scales, which, 

 to the naked eye, appear not unlike the delicate rhomboidal markings 

 of a very young Lepidodendron, but when viewed through a lens 



Fig. 3. 



exhibit an oval outline, as shown in fig. 3, which is 



magnified three times the natural size. These scales 



are quite distinct as far down as the point h (fig. 1), 



a few inches below the first ramifications of the roots. 



The roots a, b are marked with irregular waving strise, 



occasionally running one into another, as represented in 



figs. 4 and 5, the first being the upper, and the second 



the lower side, of the same piece of root. It will be 



observed that the areolae on the upper side are squeezed 



into an oval shape, sometimes to such a degree that 



merely a black indented mark is visible, whilst on the under side they 



preserve their circular form with a minute black dot in the centre. 



