'If Vernet was the éminence grise behind Alexander Cozen's interest in painting out-of-doors, then perhaps indirectly he is behind the two 1752 pictures by Richard Wilson now in Dublin, where on the one hand we see a painter at his easel in Tivoli, [P44] and on the other we subsequently see his assistant staggering home with an enormous canvas or portfolio [P45].' (p. 425)