The Hawke's Bay County Council (out of the funds of the County Corporation), the Hastings Borough Council (out of the funds of the Hastings Corporation), and the Havelock North Town Board (out of the funds of the said Board) are each hereby authorized, if they shall respectively so think fit, to make from time to time contributions or expend money for the upkeep, maintenance, roading, planting with trees, fencing, or cultivation of the said park or the erection of buildings thereon, or otherwise for the improvement of the said park.