TY  - JOUR
T1  - Researches in Physical Geology
JF  - Philosophical Transactions of the Royal Society of London (1776-1886)
VL  - 129
SP  - 381
EP  - 423
PY  - 1839/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1839.0022
M3  - doi:10.1098/rstl.1839.0022
AU  - Hopkins, W.
ER  -