232, Manujacture of Compass Needles. 
In the same town, about 8 miles in a N. E. direction, ig 
found a substance which some of the inhabitants decla 
to be copper ore, to which they attached a high value; but 
it is now pretty well ascertained to be chloropheite. It 
occurs in nodules about the size of a pea, sometimes larger; 
imbedded in amygdaloid. When a mass is first broken, the 
small nodules are of a greenish colour ; but by exposure to 
the air it changes and finally becomes black. It is very brit- 
tle, possesses a remarkable greasy feel, and may be easily 
scratched by the finger nail. Before the blowpipe it remains 
without any alteration. 
Up the Bay of Fundy, on Cape Dory, native copper is 
said to have been found; but the specimens which I have 
seen, bear evident marks of artificial fusion. Also, on Cape 
Spail, magnetic iron ore, inclosing compact red oxide of 
iron, accompanied by geodes of amethyst. Also, at Cum- 
berland, black oxide of manganese, frequently crystalized ; 
and coal forming small veins in red sandstone. Bog iron 
ore, in extensive beds, is found in various towns, and occa- 
sionally mixed with it is the earthy phosphate of iron. 
ART. VIT.— Remarks on Prof. Eaton’s proposed improve- 
ment in the manufacture of Compass Needles ; by a SUR- 
_ -VEYOR. 
TO THE EDITOR. 
this discovery in examining a compass of fine workmanship, 
: which h 4 been returned to the maker as an imperfect one- 
‘es of experiments proved that the cause of the defect 
4odgement of a small scale of steel in the limb of 
* This title was written by the Editor. 
