When he heard Peter's voice he popped in alarm behind a tulip 

Arthur Rackham, a prominent British illustrator known for his whimsical and often eerie depictions of fantasy and folklore, captures a moment of fear in this illustration titled "When he heard Peter's voice he popped in alarm behind a tulip." The image depicts a small gnome-like creature with a feather in his hat, cowering behind a large white tulip, his face contorted in alarm. Rackham’s detailed pen and ink style, characterized by intricate linework and muted color, creates a sense of depth and realism, while the whimsical subject matter adds a touch of magic and wonder. This illustration, likely from a children’s book, exemplifies Rackham's ability to bring fantastical characters to life in a captivating and engaging way.