ence, and if the plaintiff had desired the attention of the jury to be addressed specifically to this rule of evidence, an appropriate request should have been made. ,
5. While it is the duty of the several counties of this State to construct all bridges (even foot-bridges) across streams in a workmanlike and proper manner, so that any person using ordinary care may use them with safetjr in ordinary travel, the county authorities are not required to use extraordinary care and diligence, even to foresee casualties resulting from extraordinary occasions. Of course, in the exercise of extraordinary care, the fact that streams will rise and freshets occur will be taken into account. But such an extraordinary case as that a bridge might be engulfed by an earthquake would not reasonabty be anticipated, and would not be within the purview of the county’s duties. In other words, the county 'authorities are not insurers of the safety of those who use the public bridges. The county is to build bridges reasonably safe for ordinaryr use, with an eye to those extraordinary strains and extraordinary occasions which rise within ordinary human experience.
6. The nails which were taken from the bridge in 1909 were properly excluded from evidence, not only because the accident occurred in 1908, nearljr a year before, and therefore the nails were not illustrative of the condition of the bridge in 1908, but also because there was no evidence that they were taken from the plank which, it was alleged, tilted and caused the child’s death.
*7.* There was no error in omitting to give the jury instructions as to the measure of the plaintiff’s damage for the loss of the services of her child; for the reason that there was no evidence as to the value of the child’s services. Furthermore, this omission could not have been harmful, for the reason that the plaintiff sued both for the value of the child’s life and the value of its services, and she could not recover for both. It is probable that if she had recovered, her recovery would have been, larger in case the jury allowed her the. value of the child’s life than if the recovery were for its services until it reached its majority; and the right of the plaintiff to the value of the child’s life provided the jury found the county negligent was fully explained.
8. The charge of which complaint is. made in the :8th special ground of the motion for new trial was really very favórabíe to the plaintiff. It was equivalent to telling the jury that certainly, if