TY  - JOUR
T1  - Observations on the Variation, and on the Dip of the Magnetic Needle, Made at the Apartments of the Royal Society, between the Years 1786 and 1805 Inclusive
JF  - Philosophical Transactions of the Royal Society of London (1776-1886)
VL  - 96
SP  - 385
EP  - 419
PY  - 1806/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1806.0022
M3  - doi:10.1098/rstl.1806.0022
AU  - Gilpin, G.
ER  -