Translation of a letter, from Nicolaus Cyrillus to Cromwell Mortimer Concerning corrections to Cyrillus's article on the cold in February in Naples printed in 'Philosophical Transactions' (vol 36, no 410, p 142); concerning observations of Mount Vesuvius during September 1731; sends a paper entitled 'A history of the Earthquake, which in the year 1731 afflicted Apulia and almost the whole kingdom of Naples' 1732