Arch. 



32 



Azoic White Crystalline Limestone formation of Sussex Co., 

 N. Y., supposed to be of Precambrian or Laurentian age, but 

 possibly Cambrian. 

 Archaeopteris bockshiana ? Geop. Noeggerathia locks- 



chiana. Lesq. Geo. Ta. 1858, p. 854'5, pi. 3, figs 1 to 1 d.— 

 Adiantites lockschii^ Goep. ; Cydopteris hockschii, Goep. 

 Lesq. Coal Flora, p. 306, pi. 49, figs. 1 to 4.— X, Pocono (Yes 

 pertine) formation opposite Mauch Chunk; and below Potts- 

 ville. Pa. ; always in small fragments. 



