|Title||Letter from James Calder, Maryland, to Sir Joseph Banks |
|Date||10 January 1794|
|Description||Sends notes of observations made on a visit to Niagara in 1789; sees evidence that the cataract is gaining continuously upward; if it could be determined at what annual rate the rock is worn away, the age of the world could be known; it is said locally that the wear is half a rod (2 3/4 yards) a year.|
With accompanying note by Charles Lyell, 31 January 1856, stating that this remarkable letter proves that early visitors to Niagara were struck by the retrogression of the Falls.
|Access conditions||No photocopying|
Fellows associated with this archive
|NA8116||Banks; Sir; Joseph (1744 - 1820); naturalist||1744 - 1820|
|NA8255||Lyell; Sir; Charles (1797 - 1875)||1797 - 1875|