TY  - JOUR
T1  - An Extract of a Letter, Written by D. B. to the Publisher, Concerning the Present Declination of the Magnetick Needle, and the Tydes, May 23. 1668
JF  - Philosophical Transactions (1665-1678)
VL  - 3
SP  - 726
EP  - 727
PY  - 1753/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1668.0026
M3  - doi:10.1098/rstl.1668.0026
AU  - B., D.
ER  -