^{page 83 note *} Since Mr Anderson’s note was in print, I have discovered another Wallop in Shropshire. It is not unlikely that this may have been the original name of the river Rea, rising northeast of Montgomery and joining the Severn near Shrewsbury. Further research is required here to discover early forms and the precise attribution of the name. — O.G.S.C.

^{page 88 note *} The later developments have been worked out in detail, but quite independently, by De Geer (‘The subtropical belt of Old WorId Empires’, see pp.118–20, post.) —ED.