Conglomerate
Salt
Basalt
Sea Urchin Fossil
Pecopteris Fern Fossil
The giant oarfish
Kookaburra
Santi di Tito - Detail
Predella panel St Peter Martyr
Madonna of Senigallia
Federico da Montefeltro and his son
A foot of Federico da Montefeltro
LIguella Museum, Portoferraio
An allegory of melancholy
The Christ Child Disputing with the Doctors
Stormy sea
St Bavo's Church in Haarlem
Reverend Robert Walker
The honourable Mrs Graham
The Ladies Waldegrave
The Monument to Philopappos