The river possesses this wonderful characteristic: while all other rivers wash away and exhaust land, the Nile, though so much larger than the rest, far from eating away or rubbing off soil, actually adds to its vigour; it contains very little that injuriously affects the soil,[65] for by the mud it brings down, it soaks and binds the sands. Egypt, in fact, owes to the river not merely the fertility of the soil, but also the soil itself. It is a beautiful sight when the 11 Nile has spread itself over all the fields. The plains are hidden, the valleys have disappeared; only the towns stand out like islands. In the interior of the country there is no communication except by boat. The people are overjoyed the more, the less they can see of their country. Even when the river has resumed its normal course, it discharges into the sea by seven mouths, any one of them itself a sea. Moreover, it sends out many less famous arms toward either bank. [65] Or, its least service is that it tempers the soil. And then when we look at the monsters it rears, they are equal to those of ocean in size, and no less formidable. One may judge indeed of the 12 greatness of the river from the hugeness of the animals for whose sustenance it provides food in abundance, and for whose free movements it affords room. Balbillus, a most excellent man who has distinguished himself in every walk of letters, has recorded that during his own government of Egypt he himself saw in the largest mouth of the Nile, the Heracleotic, the strange sight of what may be called a pitched battle between dolphins, coming up from the sea, and crocodiles meeting them in front from the river. The crocodiles were in the event 13 vanquished by the inoffensive animals with harmless bite. It happened on this wise: The upper part of the crocodile’s body is hard, and cannot be pierced by the teeth even of larger animals; but the lower part is soft and tender. The dolphins dived in the fight and wounded the belly of the crocodiles with the projecting spikes they carry on their back; then driving home the stroke, they fairly cut up the enemy. When a number of the crocodiles had been opened out in this 14 fashion, the remainder, to adopt military language, wheeled their line and retreated. The battle was not to the strong, the fleeing creature successfully resisted the daring, the most daring fled before the timid! Nor is it by any peculiar virtue of stock or blood that the islanders from Tentyra beat the crocodiles, but merely through pluck and contempt of them. They take the offensive against them, and as the crocodiles try to escape they lasso them and drag them ashore. At the same time many of the hunters lose their lives through lack of nerve in the chase.