Half length portrait of Ellis who is shown seated in full face; his right hand clasps a book, his left rests on his knee. He wears a black coat and white choker. The background is reddish-brown. This was probably the picture that was exhibited at the Royal Academy in 1841.
In 1806-1807, he was elected President of the Royal Medical Society. Keenly in botnay, he spent his last years in a house near the Botanical Garden. He died in Edinburgh in 1841.
Ellis made some interesting contributions to the literature of science. Coal-gas works occupied his attention for some time. The subject which interested him most was vegetable anatomy and vegetable physiology.
Daniel Eliis bequeathed £500 to the Principal and Faculty of Medicine of the University with which to found a prize to be awarded every third or fifth year, in the form of a gold medal, to a studnet of medicine for the best essay or treatise on a subject of animal or vegetable physiology, a 'most important branch of Science'.