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 9 



p. 64 

 . in which 

 jryological 

 rs have 

 erved. 



1 

 1 



o 

 Ji 



o 





p. 28. 

 No. of sp 

 the Em 

 characte 

 been ob. 



o 

 i. 





c^ 



1^ 1-1 <N OS «3 i-H 



CO iM e<i 



p. 125. 



Numerical, specific, and geogra- 

 phical distribution of the 12 

 Primitive Types appearing in 

 the lowest beds of the Second 

 Silurian Zone. 6 





Pl 

 pi 



1 



2 Newfoundld, 2 Canada. 



2 Norway, 1 Eussia, 



1 England, 1 Norway, 2 

 Sweden, 14 Eussia. 



1 Canada, 4 Newfound^ 

 land, 2 Scotland. 



1 Newfoundland, 14 Can- 

 ada, 2 New York, 1 Wis- 

 consin, 3 Missouri, 6 

 England, 9 Norway, 6 

 Sweden, 24 Eussia, 17 

 Bohemia. 



1 Canada, 1 England, 8 

 Eussia, 3 Sweden, 2 

 Norway, 3 Bohemia. 



10 



p. 125, 



Geological Horizons of the 12 

 Primitive Types appearing in 

 the lowest beds of the Second 

 Silurian Zone. 



Calciferous Sandstone, 



Orthoceras Limestone. 

 Orthoceras Limestone, 



Tremadoc. 

 Calciferous Limestone, 



L. Llandeilo. 

 Calciferous Sandstone, L. 



Llandeilo, Orthoceras 



Limestone, Band dl. 



(Barrande). 



Calciferous Sandstone, L. 

 Llandeilo, Orthoceras 

 Limest., Bandc?l. Barr. 



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1— I 





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i-l r-H 03 (N 

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a> OeO'O <0 !MM-# CD iMCOCO 



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N 



p. 84 & 128. 

 Genera and Sub-Genera. > 







i 



iii) 



P. =0 



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