Section 23. The word "improvements," as used in section 22, means works by "Improvements" defined. which the ann

23. The word "improvements," as used in section 22, means works by "Improvements" defined. which the annual letting value of the land has been, and, at the time of demanding compensation, continues to be, increased, and comprises— 1st.—The construction of works for the storage of water, for the supply of water for agricultural purposes, for drainage, and for protection against floods; the construction of wells; the reclaiming and clearing of waste lands and jungles; and other works of a like nature; 2nd.—The renewal or reconstruction of any of the foregoing works, or such alterations therein or additions thereto as are not required for maintaining the same, and which increase durably their value.