Ruskin tells Heaton he is uncomfortable with her having purchased "those two Calais's", as he finds the subjects of the works very similar. Ruskin proclaims "the one with the posts" "magnificent" and worth at least 100 guineas but admits that the more he reflected on the other, the less he liked it. Ruskin tells Heaton if she sends him £26.10 he can exchange the second for two drawings on blue paper, one of Ehrenbreitstein and one of Genoa. Ruskin says that drawings on blue paper are rare and that, if Heaton allowed him to make an engraving from the Ehrenbreitstein, it would double its value. Ruskin says if she agrees to the exchange, she must send the Calais by the next post or (if the next post is near) by the post after that. Heaton may send the money "at [her] leisure." Ruskin draws a line across the page, moving from A to B, stating that the width of the drawings is an inch broader than the line [the line measures 3.25 x 4.6 in., suggesting the drawings measure around 3.25 x 5.6 in.]. Ruskin notes that the drawings are worth 40 guineas each. [Date provided by Surtees: First half of February 1857]