308 E. H. BARBOUR — NATURE AND PHYLOGENY OF DAEMONELIX. 



These are not water-worn fragments of the Devil's corkscrew, but are 

 forms distinct and characteristic and confined to a definite horizon, as 

 shown by hundreds of them found in position. 



Superficially, the structure of Daemonelix cakes, like that of each and 

 every form of this puzzling series, consists of a tangle of Daemonelix 

 fibers. A fractured surface shows a periphery of interlacing tubules 

 encircling a core of sand, traversed here and there by stray fibers. 



Microscopically, there is precisely the same tissue found at the outset 

 in the primitive fiber. We have cut sections from every part of many 

 individual Daemonelix cakes, with the unvarying result that the cellular 

 structure, though perfectly preserved in some sections and imperfectly 

 in others, is lacking in none. 



DAEMONELIX BALLS. 



i 



Ascending the canyon, one comes next to a form closely allied to the 

 foregoing in every essential. These the students named Daemonelix 

 " balls," because of a real or fancied resemblance to the old-fashioned 

 New England codfish ball. As to mode of occurrence, they were found 

 in great numbers, weathered out and tumbled together at the base of the 

 canyon and also in situ, being confined to a vertical range of eight meters, 

 directly overlying the Daemonelix cakes (see plate 33, figures 9, 10, 11, 12). 

 Though so like the cakes in every essential, the balls differ superficially 

 in that they are smaller in circumference, more regular and uniform in 

 size, of greater complexity, and that they are solitary. Superficially 

 they are like the Daemonelix cakes; microscopically they are identical, 

 and words need not be multiplied. 



DAEMONELIX CIGARS OR FINGERS. 



Continuing the ascent of the canyon toward Eagle Crag, one comes 

 next upon forms much more advanced and complex, called by the 

 students Daemonelix " cigars " or " fingers." Immense numbers of the 

 tip ends of these, weathered out and lying at our feet, did suggest a 

 resemblance which, though remote, justified the name. As to range, 

 the cigars, unlike the preceding forms, are not restricted to a given 

 horizon,- but are found in increasing numbers from their first appear- 

 ance to the middle of the regular Daemonelix beds, and in diminishing 

 numbers thence to the topmost. 



In outward appearance they have acquired a pronounced vertical 

 habit and a noticeable tendency to a spiral form. When found in posi- 

 tion they are about the size of an ordinary cane. A few exceed a meter 

 in height. At times a specimen is loosely branched, though ordinarily 



