Where two cemetery associations have been organized, and the lands owned and platted and dedicated by each of said associations adjoin or are in such close proximity that the whole can be efficiently managed by one of the organizations and under one uniform platting and scheme, either one of said associations, by its president and secretary, and by the consent and direction of a majority of all the individual lot owners in said association secured by vote to be taken at a meeting to be called by the said president thereof for that purpose, may sell and convey to such other association, for general burial purposes, and in bulk, all the land and property of said association not already sold and conveyed to individual lot owners, and said property shall thereafter be held, managed and disposed of by the purchasing association as is now by law provided: Provided, however, That notwithstanding any other statutes to the contrary, any cemetery corporation, either private or public, or cemetery association, whether for profit or nonprofit, may purchase the assets, real or personal of any other such cemetery organization, except for those burial lots already sold for burial purposes.