Sir William Crookes, O.M., LL.D., F.R.S.A coat of arms, divided into two by a chevron, of which contains three prisms within. Above this are two crosses, and below, a radiometor. A knight's helmet is at the helm surrounded by mantling, and a decorated elephant stands at the crest with a fourth prism. Beneath the shield is the motto Ubi Crux Ibi Lux.still image