On the right, a pair of hands emerge from the sun to proffer a rod of Asclepius, a snake wrapped round a staff, to a reclining woman.
The symbolism is very rich. The sun indicates Apollo, who was also god of healing. Asclepius's snake is usually shown in a stiff formal pose but here it is writhing and the woman is patting its head - all a bit odd.
On the left-hand doorway, a bunsen burner heats a retort, with a lot of test tubes and scales, just like the stinks lab at school. An open book has a quotation from the 19th century American reformer, abolitionist and educationalist Horace Mann. A hand turns the page, and it is easy to miss that the hand emerges from a cloud and is therefore, presumably, God's.