Two philosophers, Senior and Adolphus, stand discoursing at the foot of a tree with three roots. Between them is a downward pointing triangle, with Sulphur on the left vertex beside Senior, Salt on the right beside Adolphus, and Mercury on the central vertex. The tree has seven branches connected with the planets, Sun on the left, follwed by Mars and Venus, then Mercury in the centre, followed by Saturn, Jupiter and the Moon on the right. In the branches of the tree is an upward pointing triangle mirroring the one below.