248 DESCRIPTIVE CATALOGUE 



GENERAL DKSCKIPTION. I found the specimen in situ in the 

 plant-bed at the bottom of Luccomb Chine, and it was evidently 

 part of a trunk of large size. The mass of tissue was enclosed 

 in the dark, coarsely granular matrix forming a pseudo-nodule 

 in the way characteristic of this deposit. The tissue consisted 

 of an oblong mass, forming a flat wedge, which, when broken 

 across, seemed entirely like uniform secondary wood. It was 

 large and heavy, and I broke it up into several pieces, bringing 

 away two small wedges, which are the specimens from which 



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Text-fig. 7-. I'crt id. luccoinbeMti*, sp. nov. Transverse section showing 

 the mass of tissue with tlie false appearance of annual rings a:id 

 generally wood-like texture. X -. Slopes foil., SBG. 



the sections have been cut. It is important to record that the 

 mass, which looked to the naked eye like angiospermic wood. 

 showed no signs of other tissue, such as cortex, pith, etc., but 

 seemed to be throughout a uniform portion of secondary wood. 

 There was no rapid curving of the apparent growth-rings, as 

 there must have been in a small branch, but for about 15 cm. 

 at least in a transverse direction the tissues were arranged on 

 a very flat curve, as could only have been the case were the 



