TY  - JOUR
T1  - On the Effect Produced on the Deviations of the Compass by the Length and Arrangement of the Compass-Needles; and on a New Mode of Correcting the Quadrantal Deviation
JF  - Philosophical Transactions of the Royal Society of London (1776-1886)
VL  - 151
SP  - 161
EP  - 181
PY  - 1861/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1861.0010
M3  - doi:10.1098/rstl.1861.0010
AU  - Smith, A.
AU  - Evans, F.
ER  -