Section 28. The whole fence enclosing such general field shall, so far as found convenient, be apportioned among the proprietors according to the number of acres held and cultivated or otherwise used by each; and the part to be maintained by each proprietor shall be apportioned to him by two or more fence viewers, unless the proprietors agree on such apportionment. The proportion of fence of each proprietor shall be recorded in the books of the proprietors by the clerk, if any; otherwise, by the clerk of the town where the general field is situated.