Said bonds shall be construed to and shall create a statutory mortgage lien upon any such power system, power plant, electric light plant, power lines, transmission lines, or power distributing system or systems, and the appurtenances and extensions thereto so to be purchased, constructed, improved, enlarged, extended or repaired, to and in favor of the holders of said bonds and each of them and to and in favor of the holders of the coupons of said bonds, and each of them.
W.S. 37-7-205