N.J. Stat. § 44:5-14
The board of chosen freeholders of a county which has no hospital located therein wholly maintained by the county, other than the hospital or sick ward of the county almshouse, may appropriate a sum of sums of money in the manner in which appropriations for other county purposes are made, which sum so appropriated shall be included in the annual tax levy of the county and collected in the same manner and at the same time as other county taxes.
The sum shall be applied to the purpose of constructing or enlarging any hospital or hospitals located in the county which is supported by private charity and where such patients as may be sent thereto are supported and maintained. The sum or sums so appropriated shall be used and applied in constructing or enlarging such hospital as shall afford care, comfort and maintenance to such patients as are residents of the county at the time of being sent to that hospital.
N.J.S. § 44:5-14