70 HISTORICAL PALAZAONTOLOGY. 
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 Hozoon under the name of Fozodn 
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 Asfzdel/a. 
LITERATURE. 
Amongst the works and memoirs which the student may consult with 
regard to the Laurentian 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.,’ 
XX1. 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. 
(7) ‘‘Supplemental Notes on the Structure and Affinities of Eozoon 
Canadense.” W. B. Carpenter. ‘Quart. Journ. Geol. Soc.,’ 
Xxil, 219-228. 
(8) ‘*Onthe So-Called Eozodnal 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 Zozodx. Those 
who are desirous of studying the later phases of the controversy with re- 
gard to Lozodu 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. 
* Tn 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, asa 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 paleontological science, 
except in such instances as where they contain special information on 
special points. 
