New Order of Gigantic Fossils. 



21 



along the middle or upper edge of the lower ones. The 

 imaginary axis of this great spiral is an inverted cone with a 

 base of about two inches. 

 As the small sections will 

 show, the diameter of the 

 coils increases from above, 

 downward. The speci- 

 men, including fragment, 

 is nearly nine feet high, 

 and an unknown amount 

 still remains in the ground. 

 Its whole effect is that of 

 some magnificent bryo- 

 zoan, though on a scale 

 far grander, and on a plan 

 more generous and im- 

 posing than that of any 

 fossil Archimedes ever 

 found. Toward the bot- 

 tom certain rough pillars 

 or posts are thrown out, 

 as if to lend additional 

 strength to the unsup- 

 ported helix as the SUperin- fig. 17. — Specimen of Daimonelix anaxilis, 

 CUmbent weight increases. with transverse stem modified into three spher- 



'^ _ ical enlargements. Sketched in the fields. 



Transverse sections are 



exhibited in Plate IV., and one on a larger scale in Fig. 18. 

 Within are two large, thick-walled tubes. These extend 

 through the lower fourth of the specimen. 



Daimonelix. 



This corkscrew, the smallest variety yet found, is charac- 

 terized by its rapid pitch of screw. Inasmuch as the speci- 

 mens in my collection, and others noted in the field, were 

 fragmentary, no further description will be offered until 

 studied further. See Plate V., Fig. 31. 



321 



