97. For the payment of the said annual rent, and every other annual rent agreed upon or ascertained, and to be paid for the purchase money of any land, or for any portion of the purchase money of any land which the vendor agrees to leave in the hands of the company, the railway and the tolls thereon shall be liable and chargeable, in preference to all other claims and demands thereon whatsoever, provided the deed creating such charge and mortgage be duly registered in the registry office of the proper county or registration division.
R. S. 1964, c. 290, s. 97.