clear, of citron colour, and strong smell; and if it be thick, or red, or black, it is counterfeit. And if you will put a little balm in the palm of your hand towards the sun, if it be fine and good you will not be able to bear your hand in the sun's heat. Also, take a little balm with the point of a knife, and touch it to the fire, and if it burn it is a good sign. Take also a drop of balm, and put it into a dish, or in a cup, with milk of a goat, and, if it be natural balm, anon it will take and curdle the milk. Or put a drop of balm in clear water, in a cup of silver or in a clean basin, and stir it well with the clear water; and if the balm be fine and genuine the water will not be troubled; but if the balm be counterfeit the water will become troubled immediately. Also, if the balm be fine, it will fall to the bottom of the vessel, as though it were quicksilver; for the fine balm is twice as heavy as the balm that is counterfeited. Now I will speak of another thing that is beyond Babylon, above the Nile, towards the desert, between Africa and Egypt; that is, of the granaries of Joseph[318], that he caused to be made, to keep the grains against the dear years. They are made of stone, well made by masons' craft; two of them are marvellously great and high, the others are not so great. And each granary has a gate to enter within, a little above the earth; for the land is wasted and fallen since the granaries were made. Within they are all full of serpents; and above the granaries without are many writings in divers languages. And some men say that they are sepulchres of great lords, that were formerly; but that is not true, for all the common rumour and speech of the people there, both far and near, is that they are the granaries of Joseph; and so find they in their writings and chronicles. On the other side, if they were sepulchres, they would not be empty within; for you may well know, that tombs and sepulchres are not made of such magnitude or elevation; wherefore it is not credible that they are tombs or sepulchres.