FAR back in the twilight of the pictured history of the past, the cross is found on the borders of the river Nile. A horizontal piece of wood fastened to an upright beam indicated the hight of the water in flood. This formed a cross, the Nileometer. If the stream failed to rise a certain hight in its proper season, no crops and no bread was the result. From famine on the one hand to plenty on the ...