But as he rested at a fountain by the way it was stolen by a serpent, and man lost the gift of immortality. In Babylonia, and to a lesser extent in Assyria, women were practically on a footing of equality with the men. They could trade in their own names, could make wills, could appear as witnesses or plaintiffs in court. We hear of a father transferring his property to his daughter, reserving only the use of it during his life. Polygamy was not common; indeed, we find it stipulated in one instance that in the case of a second marriage on the part of the husband the dowry of the first wife should be returned to her, and that she should be free to go where she would. Of course these rules did not apply to concubines, who were often purchased. Adoptions were frequent, and slaves could be adopted into the family of a freeman. The large number of slaves caused the wages of the free labourer to be low. But the slaves were treated with humanity. From early times it was a law that if a slave were hired to another, the hirer should pay a penalty to his master whenever he was incapable of work, thus preventing "sweating" or overwork. Similarly, injuries to a slave were punished by a fine. The slave could trade and acquire property for himself, could receive wages for his work when hired to another, could give evidence in a court of law, and might obtain his freedom either by manumission, by purchase, by adoption, or by impressment into the royal service. Farms were usually held on a sort of _métayer_ system, half the produce going to the landlord as rent. Sometimes, however, the tenant received only a third, a fourth, or even a tenth part of the produce, two-thirds of the annual crop of dates being also assigned to the owner of the land. The tenant had to keep the farm-buildings in order, and to build any that were required. House-property seems to have been even more valuable than farm-land. The deeds for the lease or sale of it enter into the most minute particulars, and carefully define the limits of the estate. The house was let for a term of years, the rent being paid either twice or three times a year. At the expiration of the lease, the property had to be returned in the state in which the tenant had found it, and any infringement of the legal stipulations was punished with a heavy fine. Agents were frequently employed in the sale or letting of estates.