'The scientific term for a sea urchin exoskeleton is "Test", which is used here as a double entendre for the subject and the experimental process in rendering it.'
Test #1. Graphite and oil on canvas over panel. 60 x 48 inches.
Test #3. Colored pencil and oil on canvas. 30 x 30 inches
Test #2. Graphite, colored pencil and oil on canvas over panel. 24 x 24 inches