No. 3.] MISCELLANEOUS. 189 



miscp:llaneous. 



At the meeting of the London Geological Society, held March 

 12th, the following papers among others w^re read : — The gold- 

 leads of Nova Scotia, by Henry S. Poole, F.G.S., Governmeot 

 Inspector of Mines. Tlie author remarked upon the peculiarity 

 that the gold-leads of Nova Scotia are generally conformable with 

 the beds in which they occur, whence Dr. Sterry Hunt and others 

 have come to the conclusion that these auriferous quartz veins 

 are interstratified with the argillaceous rocks of the district. 

 With this view he does not agree. He classified the leads in 

 these groups according to their relations to the containing rocks, 

 and detailed the results of mining experience in the district, ai 

 showing the leads to be true veins by the following characters : 

 ri) Irregularity of planes of contact between slate and quartz; 

 (2) The crushed state of the slate on some foot-walls; (3) Irre- 

 gularity of mineral contents; (4) The termination of the leads; 

 (5) The efi'ects of contemporary dislocations; (6) The influence 

 of strings and offshoots on the richness of leads. The author 

 further treated of the relative age of the leads and granite, and 

 combated the view that the granites are of metamorphic origin, 

 which he stated to be disproved by a study of the lines of 

 contact. He also noticed the eifects of glaciation on the leads, 

 and the occurrence of srold in carboniferous con<ilomerate. — 

 On conodonts from the Chazy and Cincinnati groups of the 

 Camhro- Silurian, and from the Hamilton and Genesee-shale 

 divisions of the Devonian, in Canada and the United States, 

 by G. Jennings Hinde, F.G.S. After a sketch of the bibliography 

 of the subject, the author described the occurrence of conodonts. 

 In the Chazy beds they are associated with numerous Lcperditice, 

 some triiobites and gasteropods ; in the Cincinnati group with 

 various fossils ; and in the Devonian strata principally with fish- 

 remains ; but there is no clue to their nature from these associated 

 fossils. They possess the same microscopic lamellar structures as 

 the Russian conodonts described by Pander. The various afl&ni- 

 ties exhibited by the fossil conodonts were discussed ; and the 

 author is of opinion that though they most resemble the teeth of 

 myxinoid fishes, their true zoological relationship is very uncer- 



