Baron Nyevelt on New Electro-magnetic Phenomena. 131 
Designation of the 
Apparatus. 
When the 
two ends are 
plunged in 
the liquid. , 
When another piece of metal is applied upon one 
of the ends. 
Upon the end a. 
Upon the end b. 
Zinc & Copper. 
The zinc strip is 
below, and the 
copper one passes 
above. 
Declination 
East 30°. 
Zinc. 
Copper. 
Iron. 
Zinc. 
Copper. 
Iron. 
■ 
Declina- 
tion 
East 5° 
“ ■ 
- 
Declina- 
tion 
East 5'’ 
Zinc & Copper. 
The zinc to the 
east, and the cop- 
per to the west. 
Inclination 
South 10" 
- - 
- - 
Inclin. 
effect 
doubtful. 
- - 
- • 
Inclin. 
effect 
doubtful. 
Zinc Sc Copper. 
The zinc above, 
and the copper 
passing below. 
Declination 
West 30°. 
- - 
- - 
Declina- 
tion 
West 5° 
- - 
- - 
Declina- 
tion 
West 5° 
Zinc Sc Copper. 
Zinc to the west, 
copper to the east. 
Inclination 
North 10°. 
- - 
- - 
Inclin. 
effect 
doubtful. 
- - 
- - 
Inclin. 
effect 
doubtful. 
Zinc alone. 
The strips above 
each other. 
- - - 
- - 
Declina- 
tion East 
45* 
Declina- 
tion 
East 45° 
- - 
Declina- 
tion 
West 45° 
Declina- 
tion 
West 40° 
Zinc alone. 
The strips along- 
side one another. 
- - 
Inclina- 
tion 
S. 10° 
Inclina- 
tion 
S. 10° 
- - 
Inclina- 
tion 
Nor. 10° 
Inclina- 
tion 
Nor. 10° 
Copiper alone. 
The strips above 
each other. 
- - . 
Declina- 
tion 
West 30° 
- - 
Declina- 
tion 
W. 15° 
Declina- 
tion 
East 30° 
- - 
Declina- 
tion 
East 10° 
Copper alone. 
The strips along- 
side one another. 
- - - 
Inclina- 
tion 
Nor. 15° 
- - 
Inclina- 
tion 
North 5° 
Inclina- 
tion 
S, 10° 
- 
Inclina- 
tion 
South 5° 
Iron alone. 
The strips above 
each other. 
Declination 
East 10°. 
Decima- 
tion 
W. 100° 
Declina- 
West. 5° 
- - 
Declina- 
tion 
E. 110° 
Declina- 
tion 
East 10° 
Iron alone. 
The strips along- 
side one another. 
Inclination 
South 5°, 
Incliiia- 
nation 
S. 20° 
Inclina- 
tion 
South 5° 
Inclina. 
tion 
N. 15° 
Inclina- 
tion 
N. 5° 
Ohservations . — In these results, no notice is taken of the con- 
tacts with the same metal, the effect being merely increased in 
proportion to the quantity of surface exposed to the liquid. 
When the two ends of the strips are united under the acid, 
the effect is diminished in the first four of the precedirig ap- 
paratuses, and destroyed in the last six apparatuses. 
