CHAPTER XXI.
ON FOOT.III.THE MERCERIA AND THE RIALTO Walking in Venice--The late Colonel Douglas--Shops--The Merceria clock--S.

Zulian--S.

Salvatore--Sansovino--Carlo Goldoni--the Campo Bartolommeo and Mr.Howells--S.

Giovanni Crisostomo--Piombo and Giorgione--A Sacristan artist--Marino Faliero's house--SS.

Apostoli and Tiepolo--Venetian skittles--A broad walk--Filled in canals--The Rialto Bridge--S.