2 24 RECENT P UBLICA TIONS 



Ascending to higher beds one comes next to Daemonelix "cakes," 

 which are about the size of common camp griddle-cakes. So far as 

 can be determined by the eye or the microscope they are nothing 

 more nor less than colonies, or aggregations of Dsemonelix fibers. 

 Vertical range twenty-five feet. 



Next above the "cakes" come the Daemonelix "balls," which 

 resemble in size and shape the old New England codfish ball. These 

 are but aggregations or bunches of Dsemonelix fibers. Vertical range 

 about twenty-five feet. 



Next come slender forms of nearly vertical and somewhat spiral 

 habit, called Daemonelix "cigars." The weathered and broken ends 

 of these occur in immense abundance. They are about the size and 

 length of an ordinary walking stick. These, too, are but aggregations 

 of the simple Daemonelix fiber. Though practically confined to a 

 range of twenty nor more feet they occur, in decreasing numbers, 

 almost through the upper Daemonelix beds. 



The forms encountered next are frail and slender, scarcely thicker 

 than the wrist, yet positively spiral and vertical in habit. They are 

 viewed as the immediate progenitors of Daemonelix regular. They 

 are but aggregations of the primitive Daemonelix fiber. Vertical range 

 scarcely twenty feet. 



Above all, comes the " Devil's Corkscrew," the first forms of which 

 are smaller, more regular, and more mathematically exact than are the 

 larger and strangely modified forms characteristic of the topmost 

 beds. Some are free spirals, some are fixed about an axis, some have 

 no transverse trunk, others have one, two, or three ; others, called 

 " twin screws," have, in each case, a large screw and transverse trunk, 

 ending in a smaller reversed screw and trunk. These are thought to 

 be the first complete specimens of Daemonelix. Continued studv 

 makes it only the more apparent that these magnificent screws are but 

 spiral aggregations of the simple Daemonelix fiber first encountered. 



More than one hundred micro-sections have been cut from all 

 parts of all forms. Without exception all show precisely the same 

 simple, cellular, non-vascular structure, to be likened only to sea- 

 weed. Numerous photomicrographs of these have been made and are 

 ready for publication. '^ 



RECENT PUBLICATIONS. 



— American Museum Natural History. — Bull., Vol. VIII, 327 pp. New 

 York, 1896. 



