Tree [verso] 

"Tree [verso]" is a small-scale drawing by Robert Hogg Nisbet, a Scottish artist known for his landscapes and nature studies. This particular work, likely a study for a larger composition, depicts the intricate branching structure of a tree in a simplified, almost abstract style. The verso, or back, of the work is covered with handwritten calculations, suggesting Nisbet's rigorous approach to art and his exploration of mathematical principles in nature. The drawing's intimate size and focus on detail reflect a close observation of the natural world, a common theme in Nisbet's artistic output.