TY  - JOUR
T1  - Some Observables about Load-Stones, and Sea-Compasses
JF  - Philosophical Transactions (1665-1678)
VL  - 2
SP  - 423
EP  - 424
PY  - 1753/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1666.0004
M3  - doi:10.1098/rstl.1666.0004
ER  -