TY  - JOUR
T1  - Researches in Physical Geology. Third Series
JF  - Philosophical Transactions of the Royal Society of London (1776-1886)
VL  - 132
SP  - 43
EP  - 55
PY  - 1842/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1842.0004
M3  - doi:10.1098/rstl.1842.0004
AU  - Hopkins, W.
ER  -