Pal^. 



588 



Palaeophycus tubularis, Hall. Pdl. New York, Vol.1, 



page 7, pi. 2, fig. 1, 

 (figs. 2, 4, 5, omit- 

 ted,) showing sea 

 weeds of the earli- 

 est Siluro-cam- 

 brian age, flattened 



and heaped 

 together on a sandy- 

 shore ; the smaller 

 ones a p parently 

 solid ; the larger 

 ones hollow ; more 

 abundant towards 

 the top of the great 

 limestone forma- 

 t i o n, some times 

 with fossil shells. 

 Good localities in 

 the Mohawk val- 

 ley, at Amsterdam, 

 opp osite Fort 



|f^J4 Plain; at Oanajo 

 i^^^'3 harie, etc. — Calc. 

 sandstone. Ila. 



