Transactions of the Royal Geological Society of Cornwall, Vol.4 p135 - 144
| On a very singular Deposit of Alluvial Matter on St Agnes Beacon, & on the Granitical Rock which occurs in the same formation, J Hawkins, [Read October, 1830], IV: 135-144. |
| On a very singular Deposit of Alluvial Matter on St Agnes Beacon, & on the Granitical Rock which occurs in the same formation, J Hawkins, [Read October, 1830], IV: 135-144. |