34 Envin Hinckley Barbour 



SUPERFICIAL STRUCTURE OF DAEMONELIX, IRREGULAR AND 



REGULAR. 



Among the earlier collections from this region, fragments of 

 certain slender forms, bluntly rounded, were constantly met 

 with. But it long remained in doubt to what they belonged. 

 They were characterized by such a distinct basket work of 

 parallel or reticulated fibres as to almost bespeak their organic 

 origin. (Plate XL, Figs. 4, 5, (3.) 



DAEMONELIX "BUDS." 



Now that they have been found in place, it appears that 

 they are the ends of spurs, or processes of the Irregular 

 or Regular Daemonelix. In spite of any faults of photog- 

 raphy and the art of pictorial reproduction, the accom- 

 panying cuts give a very fair idea of their more important 

 features. Those who still consider Daemonelix simply 

 fossil burrows — a supposition contrary to reality — may 

 count the parallel grooves and ridges as so many claw 

 marks. If so, then they must grant that this fossilized burrow 

 is all the more interesting from the fact that it had both ani- 

 mal and vegetable occupants. A delicate series of fibres of 

 some acquatic plant follows and fills all these ridges and 

 furrows. 



That these fibres and filaments are really organic is appar- 

 ent to the unaided eye, and proved by the glass. In section, 

 they show the same simple tissue already observed in other 

 forms. 



The grosser structure of these is generally well defined, 

 from the fact that they have been subject to continued weath- 

 ering, which brings out the details and the delicate parts of 

 fossils as no artificial means can do. The superficial structure 

 of Daemonelix Irregular is still further shown in Figs. 1 

 and 2, Plate XI. ; and that of Daemonelix Regular in Fig. 3, 



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