CORRIGENDA ET ERRATA. 



In page 15. the whole of the last paragraph should appear in small type at the 



end of the note in the same page. 

 In page 18. line 14., for the words lower, middle, and upper flags, substitute the 



words Upper Silurian Rocks. 

 In the same page, line 17., for flags substitute part of the upper Silurian series. 

 In page 1 9. line 1 . , dele the word lower. 

 In the same page, line 11. from the bottom, instead of the sentence beginning 



with the word flags in that line, and ending with the word fossils in line 9. 



from the bottom, substitute portion of the upper series co?isists of a great thick- 

 ness of Denbigh flagstone. 

 In page 20., dele the first three lines, and as far as the word bed in line 4., and 



substitute A bed occurs. 

 In the same page, line 10., for flags substitute parts of the upper series; and in 



line 13., after the word from insert beneath. 

 In page 39. line 3. from bottom, for " British and Fossil Mammalia," read 



" British Fossil Mammalia." 

 In page 234. line 2. from bottom, for " Mem. de Vlnstitut," read " Institut." 

 In page 300., Title of Article 2. line 2., for South Wales, read North 



Wales. 

 In page 347., species 114., for Amullaria read AmpuUaria. 

 In page 347., species 116., line 5., for spine read spire. 

 In page 347., species 121., for Dupineana read Dupiniana. 

 In page 350., species 134., line 2., for seperioribus read superioribus. 

 In page 352., species 138., line 5., for angustive read angustior. 

 In page 352., species 138., line 10., for branch read much. 

 In page 353., species 150., for Schlotteim read Schlotheim. 

 In page 354., species 151., for Martinii read Martini. 

 In page 360. line 25., for Dinotherum read Dinotherium. 

 In page 392. line 7., for Canada read North America. 

 In page 392. line 14., for Canadas read British Possessions in North 



America. 

 In page 393. line 32., and in various other places throughout the article, for the 



Minudie read Minudie, Minudie being a village and not a river. 

 In page 394. line 32., dele River. 



In page 402., at the end of the article on Fossil Insects, insert D.T. A. 

 In page 407. title, line 1., for Silurian read Carboniferous. 

 In page 407. title, line 2., insert and after the word Town. Elsewhere in the 



same page the names New South Wales and Van Diemens Land should be 



interchanged. 

 In page 450. line 8. from bottom, for Herts read Hants. 

 In page 543. line 15. from top, for " Drontheim " read " Trondiem." 



• Corrigenda in the Plates. 



In the map of Nova Scotia by Dr. Gesner (Plate ii.) the gypsiferous district 

 near Truro has been inadvertently left of the same colour as the Old Red 

 Sandstone. 



In the same map the portion stated to be copied from Mr. Dawson's survey is 

 very imperfect, but is corrected in plate x., where Mr. Dawson's map is given in 

 detail. 



