76 HISTORICAL PALAEONTOLOGY. 



been discovered in Canada are thought to come from rocks 

 which are probably of Huronian age. In Bavaria, Dr Giimbel 

 has described a species of Eozoon under the name of Eozoon 

 Bavaricum, from certain metamorphic limestones which he 

 refers to the Huronian formation. Lastly, the late Mr Billings 

 described, from rocks in Newfoundland apparently referable to 

 the Huronian, certain problematical limpet-shaped fossils, to 

 which he gave the name of Aspidella. 



LITERATURE. 



Amongst the works and memoirs which the student may consult with 

 regard to the Lauren tuui and Huronian deposits may be mentioned the 

 following :* 



(1) 'Report of Progress of the Geological Survey of Canada from its 



Commencement to 1863,' pp. 38-49, and pp. 50-66. 



(2) 'Manual of Geology.' Dana. 2d Ed. 1875. 



(3) 'The Dawn of Life.' J. W. Dawson. 1876. 



(4) " On the Occurrence of Organic Remains in the Laurentian Rocks 



of Canada." Sir W. E. Logan. 'Quart. Journ. Geol. Soc.,' 

 xxi. 45-50. 



(5) " On the Structure of Certain Organic Remains in the Laurentian 



Limestones of Canada." J. W. Dawson. ' Quart. Journ. Geol. 

 Soc.,' xxi. 51-59. 



(6) " Additional Note on the Structure and Affinities of Eozoon Cana- 



dense." W. B. Carpenter. 'Quart. Journ. Geol. Soc.,' xxi. 

 59-66. 



(7) "Supplemental Notes on the Structure and Affinities of Eozoon 



Canadense." \V. B. Carpenter. 'Quart. Journ. Geol. Soc., 

 xxii. 219-228. 



(8) " On the So-Called Eozoonal Rocks." King & Rowney. 'Quart. 



Journ. Geol. Soc.,' xxii. 185-218. 



(9) ' Chemical and Geological Essays.' Sterry Hunt. 



The above list only includes some of the more important memoirs which 

 may be consulted as to the geological and chemical features of the Lauren- 

 tian and Huronian Rocks, and as to the true nature of Eozoon. Those 

 who are desirous of studying the later phases of the controversy with re- 

 gard to Eozoon must consult the papers of Carpenter, Carter, Dawson, 

 King& Rowney, Hahn, and others, in the ' Quart. Journ. of the Geological 

 Society,' the ' Proceedings of the Royal Irish Academy,' the 'Annals of Nat- 

 ural History,' the 'Geological Magazine,' &c. Dr Carpenter's 'Introduc- 

 tion to the Study of the Foraminifera ' should also be consulted. 



* In this and in all subsequently following bibliographical lists, not only 

 is the selection of works and memoirs quoted necessarily extremely limited ; 

 but only such have, as a general rule, been chosen for mention as are easily 

 accessible to students who are in the position of being able to refer to a 

 good library. Exceptions, however, are occasionally made to this rule, 

 in favour of memoirs or works of special historical interest. It is also un- 

 necessary to add that it has not been thought requisite to insert in these 

 lists the well-known handbooks of geological and pala.'ontolooical science, 

 except in such instances as where they contain special information on 

 special points. 



