Page 133, line 14, 



Errata 



"Equisetse" should read "Equiseta." 



u 



136, 



u 



V l 



l 









a 



136, 



u 



N 



>- "periods" 



u 



u 



"eras." 



u 



136, 



a 



18,] 



1 









it 



136, 



a 



13, 



"Keeweenawan" 



a 



a 



"Keweenawan." 



a 



137, 



u 



12, 



"Synopsis" 



a 



u 



"Synopsis of Palae 

 ozoic strata." 



a 



138, 



a 



40, 



"latter" 



a 



a 



"former." 



a 



141, 



a 



IT, 



"Keeweenaw" 



u 



a 



"Keweenaw." 



a 



142, 



a 



3, 



"equisetse" 



u 



u 



"equiseta." 



a 



140, 



a 



9, 



"masses" 



a 



u 



"mass." 



a 



142, 



a 



32, 



"Dikelocephalus" 



a 



a 



"Dikellocephalus." 



a 



146, 



u 



10, 



"Ostracoids" 



a 



a 



"Ostracods." 



a 



151, 



u 



15, 



"Lower Silurian" 



4. 



a 



"Upper Silurian." 



a 



151, 



u 



24, 



"Blue Ridge" 



a 



u 



"Blue Mountain." 



u 



158, 



a 



10, 



"equisetse" 



u 



a 



"equiseta." 



a 



163, 



u 



20, 



"Hamilton group' 



5 U 



a 



"Hamilton stage." 



a 



163, 



a 



25, 



u a 



a 



u 



"Hamilton shale." 



u 



170, 



u 



17, 



"equisetse" 



u 



u 



"equiseta." 



a 



200, 



a 



11, 



"may" 



u 



a 



"many." 



u 



229, 



.. 



11, 



"Commerciall" 



t. 



a 



"Commercially." 



a 



238, 



a 



12, 



"Quarternary" 



u 



a 



"Quaternary." 



