Another perspective on Ruskin 's account of the state of the frescoes is provided by Wethey, The Paintings of Titian: Complete Edition, III. p. 5, who describes fresco as 'the most fragile of media for the exterior of a building in any climate... At Venice, lying in the sea frescoes were soon dimmed beyond repair'. Vasari in 1568 makes clear in relation to Giorgione 's fresco of the Ca' Soranzo and Veronese 's fresco on a merchant's house that the process of deterioration started early. They were consumed by time because 'in my opinion nothing harms a fresco more than the sirocco winds, especially near the ocean where they always carry a salty moisture with them' ( Vasari, Le Vite, Testo IV.44). It was for this reason that Venetians did not use fresco techniques, even internally, to the extent that they were used elsewhere in Italy.