His earlier work had been chiefly portraiture and genre .
Vallance commenced to exhibit at the Royal Scottish Academy in 1849 , but it was not until 1857 that he took up art as a profession .
Vallance 's earlier work had been chiefly portraiture and genre .
Vallance commenced to exhibit at the Royal Scottish Academy in 1849 , but it was not until 1857 that he took up art as a profession .