Case, for diverting a water-course. The court left the facts to the jury, under this general statement of the law : “ That every man, in this country, has an unquestionable right to erect a mill upon his own land ; and to use the water, passing through his land, as he pleases ; subject only to this limitation, that his mill must not be so constructed and employed, as to injure his neighbor’s mill; and that, after using the water, he returns the stream to its ancient channel.”(b)