More superb paintings from his most productive year, 1915, including wild flowers, different approaches to autumn, and a snowstorm.
In a very prolific year, he made a view finished paintings on canvas, but the great majority were plein air oil sketches, of which some of the best are shown here.
The first in a series of articles commemorating the centenary of his death. His oil sketches are simply brilliant.
There are many important anniversaries to celebrate in paintings this year: here are some tasters.