On Metallic Minerals. 359 



and « hitened tables, lu other places we meet with swampy 

 laud rendering necessary the disagreeable description of 

 primitive road known in this country by the name of 

 corduroy bridge. Indicative of this change the pine and a 

 scanty herbage takes the place of the elm, the oak, the 

 beech, and the maple. 



Having afforded all the information I possess respecting 

 what is generally understood by the term topography of a 

 place, 1 proceed to give its geological and mineralogical 

 characters, as far as my acquaintance with the subject 

 will permit. 



The greatly predominating formation from the Bay of 

 Quinte to the Marmora works in one direction, and from 

 the Moira to the Trent in another, is transition limestone, 

 the same as that found to characterize Kingston and much 

 of its neighbourhood. A line drawn from the Marmora 

 works, about thirty miles northward of the mouth of the 

 Trent, to Kingston mills, five miles northward of Kingston, 

 would probably pass in every part of it, very near to the 

 line of junction of the primary and transition rocks, and 

 mark the limits on that si<le to the limestone I am speaking 

 of. The characters common to this limestone in general, 

 at least wherever 1 have consulted them, arc, 1st — light 

 bluWi grey colour; 2d — a slight degree of transhiccncy 

 usually on a thin edge j 3d — a compact structiue in most 

 cases ; 4th — a fracture often approaching conchoidal; 

 oth — the odor of flint when struck, and not of bitumen. — 

 Its organic remains arc also characteristic, among these 

 nmy be named producta terebratula', orthocera-, trilobites 

 and encrinites; these are found in the surlace and upper 

 Rtrata, more rar'^l) below then), and nj)[)arently not at all 

 in the lowermost. TIm- orihoceratites for their size, often 



s z 



