In the low alluvial plains indeed near the Persian Gulf it is probable that vegetation was anciently more abundant, the date-palm being cultivated much more extensively then than at present; and so far it might appear reasonable to conclude that the climate of that region must have been moister and cooler than it now is.

But if we may judge by Strabo's account of Susiana, where the climatic conditions were nearly the same as in Babylonia, no important change can have taken place, for Strabo not only calls the climate of Susiana "fiery and scorching," but says that in Susa, during the height of summer, if a lizard or a snake tried to cross the street about noon-day, he was baked to death before accomplishing half the distance.

Similarly on the west, though there is reason to believe that Palestine is now much more denuded of timber than it was formerly, and its climate should therefore be both warmer and drier, yet it has been argued with great force from the identity of the modern with the ancient vegetation, that in reality there can have been no considerable change.

If then there has been such permanency of climate in the two regions where the greatest alteration seems to have taken place in the circumstances whereby climate is usually affected, it can scarcely be thought that elsewhere any serious change has been brought about.
The chief vegetable productions of Babylonia Proper in ancient times are thus enumerated by Berosus.

"The land of the Babylonians," he says, "produces wheat as an indigenous plant," and has also barley, and lentils, and vetches, and sesame; the banks of the streams and the marshes supply edible roots, called gongoe, which have the taste of barley-cakes.