Adam, Julius (1852 - 1913) Up to Mischief Stock code: S3206 Catalogue number: 20 Oil on Canvas Signed 9 1/2 x 14 inches Price category: D: £15,000 - £20,000 Biography The German artist Julius Adam is noted primarily for his portrayals of cats, and in particular kittens. He also did a number of dog portraits.. He studied art under his father, Julius Adam Snr., and subsequently with the teachers Echter and W. Diez. He spent six years in Rio de Janeiro before returning to Germany.