CORRIGENDA. 



Page xxiv, 2nd line from bottom, alter New York into New Jersey. 



xxix, 14th line from top, after (A.D. 1870) insert and paper (A.D. 1871). 

 xxxvii, 8th line from bottom, after " proper wall," insert During the dis- 

 cussion which followed the reading of the above paper, Mr. 

 Robert Etheridge advocated " Eozoon" 



xlvi, insert "The Eozoon Canadense" a letter versus Mobius from 

 Dr. W. B. Carpenter, including another letter from Principal 

 Dawson. Nature, July 31, 1879. 

 5, 26th line from top, add chlorite. 

 10, 15th line from top, alter f* into C. 

 10, in footnote , alter 1 into 2. 

 12, 3rd par. 3rd line, alter (a) into (). 

 12, 3rd par. 4th line, alter (a) into (a). 



12, 4th par. 5th line, alter one into two. 



13, 12th line, alter Siberia into Astracan. 



14, 9th line from bottom, alter a* into a. 



15, 1st line from bottom, alter b into c.. 



15, 2nd line from bottom, alter a into b. 



16, 1st line from top, alter c into d. 



16, 4th line from top, after calcite, insert (a). 



16, 9th line from top, alter (b) into (c). 



17, 2nd line from top, alter a into b. 



17, 3rd line from top, after tile insert Under the polariscope. 

 17, 18th line from top, after cracks insert under polarized light. 

 17, 21st line from top, alter 4 into 3. 



17, 7th line from bottom, alter b into c. 



18, 17th line from bottom, after half insert (a). 



18, 16th line from bottom, after half insert (b), and after uppermost 



layer insert, (a). 

 18, 7th line from bottom, after half insert (under c). 



18, 4th line from bottom, alter on into further to and dele half. 



19, in footnote, alter 1878 into 1875. 



37, 24th line from top alter wakite into wackite. 



47, 10th line from top, alter Uhrkalk mfoUrkalk, here and elsewhere. 



48, 17th line from top, after continuity insert occurring in Tiree. 



48, 2nd line from bottom, after published) insert in a cove (A). 



49, 1st line from top, after Glassillaun insert B. 

 49, 2nd line from top, after channel insert (C). 



49, 3rd line from top, after metamorphics insert (b). 



49, 7th line from bottom, after side insert (E). 



50, 5th line from top, after its insert polarized. 



51, 2nd line of footnote, alter Reusch into Reinsch. 



78, 5th line from bottom, alter geographical into geoguostical. 

 104, loth line from bottom, alter Goniatidfc into Goniatitidcs. 

 113, 17th line from top, alter Daykins into Dakyns. 



