No. 50.] 
265 
The relative position of the dykes spoken of, cannot be understood 
without the aid of a diagram. I shall not therefore attempt to convey 
an idea of their position. 
The rock embracing this vein is gneiss of the ordinary gray colour, 
and without any remarkable characters. 
5. Quality of the Palmer ore. 
Experience has proved the value of Palmer ore, and it is regarded 
as one easy to reduce, and as furnishing a valuable iron. It is a harder 
ore and produces a harder iron than the Arnold vein. It is therefore 
used with the latter for the purpose of increasing the hardness of this 
product. It is not so rich in the vein, and is mixed, as has been re- 
marked, with white flint in too large a proportion to be reduced with- 
out washing. It will be inferred that it is preferable to the Arnold ore 
for some purposes, such as bands for cart wheels, horse shoes, and 
horse nails, and for all purposes where an elastic iron is required. 
6. Probable quantity. 
If the opinion is correct, that in piercing the fourteen foot dyke the 
~ main vein was reached, then, there can be no doubt, that the quantity 
of ore is inexhaustible. This portion measured from southeast to north- 
west was found to be thirty-five feet wide. The eastern wall of this 
vein is formed by this dyke, from which the ore cleaves, leaving a 
smooth naked surface. The opposite wall is formed by the main rock, 
and is more or less irregular and uneven. The vein dips to the west, 
but the amount of dip could not be ascertained in consequence of the 
feeble light and the small surface exposed on its western side. The 
interesting relations of this vein to the main rock, and to the dykes 
which traverse it, cannot be well understood or explained without the 
aid of diagrams. 
The vein and its accompanying dykes furnish one of the most inte- 
resting and instructive examples of the effects of intruded rocks, and 
of subterranean force in producing derangements, known in the north- 
ern section, a particular account of which, will be given in the final 
report. 
Cook Vein. 
The Cook vein traverses a hill 3 miles northwest from Cimtonville. 
The Peru Iron Company have, in former times, worked a vein cutting 
[Assembly, No. 50.] 34 
