An Observation of the Magnetic Needle Being So Affected by Great Cold, That It Would Not Traverse; By Capt. Christopher Middleton, F. R. S

C. Middleton
1737 Philosophical Transactions of the Royal Society of London  
doi:10.1098/rstl.1737.0047 fatcat:o35rycdnt5eqdlw6wx6i7p3h7i