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XIX. An Account of fome Productions of 
Nature in Scotland refembling the Giants- 
Caufeway in Ireland : In a Letter to the 
Right Reverend Richard Lord Bifiop of 
Oflory, F. R. S. from Emanuel Mendez 
da Cofta, F. R. S. 
To the Right Reverend Richard (Pococke) Lord 
BiJJjop of Offory. 
My Lord, 
Mincing- Lane in Fenchurch- Street, 
March 5, 1761. 
Ca 1 76 1 5 ’ ^L 7 "OUR Lordlhip having communi- 
JL cated to the Royal Society, at 
their lad: meeting, an account of fome rocks at the 
entiance of the harbour of Dunbar in Scotland, 
which are formed into pillars, like the growth of 
the famous Giants-caufeway, but which are folio, 
and not joined like them, I take the liberty to lend 
your Lordfhip the following account of a like na- 
tural produ&ion in other parts of Scotland, which 
was communicated to me by my ingenious friend 
Mr. Murdoch Mackenzie, who, by order of the 
Lords of the Admiralty, furveyed the coads of that 
kingdom, and which came too late to be inferted in 
its proper place in my work. 
In Cana illand, which is four Englifh miles long, 
to the fouthward of Skye, and near the illand of 
Rum, the locks, about a quarter of a mile above the 
harbour, rife into polygon pillars fouthward. About 
two miles from the wed: end of Cana, is a Iqw rock. 
or 
