Baby Phrenology Head Mug. This wonderful phrenology head mug with artist rendition of the classic Phrenology Image with a twist. This mug has a phrenology head image on both sides depicted using a sketched image of a toddler in black and white. A fabulous mug for the home or office. A great way to remember all the changes in abilities, knowledge, development, and even moods we go through throughout our lives. Collect a whole set!