Walpole’s compilation, confusingly edited, contains extracts from the papers of Dr Philip Hunt and letters from Professor Carlyle recounting their 1801 visit to Athos and investigations of libraries and manuscript holdings. It also includes a few short extracts from the journals of John Sibthorp.
This link will bring you directly to the part where Hunt and Carlyle give an interesting and readable account on their days on the mountain. It still amazes me that you can read this old books on your screen just like that, thanks to Google Books.
hv