In Egypt he made large numbers of precise drawings that he turned into paintings after his return to England in 1851. He lived in
Walton-on-Thames from 1854 until his death. In 1850 his watercolour
The Hareem (now in a private collection in Japan, and rather faded) was a huge hit when exhibited in London, and praised by
John Ruskin and other critics. This is in fact the "only major work certainly completed" in Cairo before his return. He continued to paint watercolours for most of the 1850s, before returning to painting with similar subjects and style in oils, which were quicker to produce and sold for better prices. He wrote to a colleague: "Generally in spite of all my hard work, I find water colour to be thoroly [sic] unremunerative that I can stand it no longer—it is all, all always, rolling the stone up the hill—no rest, and such little pay!" In the 1860s his usual practice was to paint two versions of the same composition, in oils (to exhibit at the
Royal Academy) and also watercolour, trying to push the price of the latter up to approach that of the former. In his technique, "Independently of the
Pre-Raphaelites, Lewis had evolved a similar method, applying colour with a minute touch on a white ground to produce a glowing jewel-like effect". Lewis became an Associate of the Royal Academy (ARA) in 1859 and a member (an RA) in 1865, and was President of the
Society of Painters in Water Colours from 1855, though this was just as he was abandoning the technique for oils. The Society did not allow members to exhibit works in oils, which Lewis now wanted to do, and he resigned in 1858. Lewis wrote very little, even letters, and when he was required to address the watercolourists as their president at a dinner in 1855, he stood up and after a while sat down again without saying a word. Partly as a result of the absence of sources, no full biography was published until 2014. Lewis continued to paint and exhibit almost up to the end of his life, but in 1873 he seems to have suffered a crisis in his health from which he never recovered before his death on 15 August 1876. After being largely forgotten for decades, he became extremely fashionable, and expensive, from the 1970s and good works now fetch prices into the millions of dollars or pounds at auction. ==Works==