One which has for its object security against those rights to, or interests in, the land granted which may subsist in third persons to the diminution of the value of the estate, though consistently with the passing of the fee by the deed of convey- ance. For what constitutes an incum- brance, see INCUMBRANCE. The mere existence of an incumbrance constitutes a breach of this covenant; 2 Washb. R. P. 658; 20 Ala. 187; without regard to the knowledge of the grantee; 2 Greenl. Ev. § 242; 27 Vt. 739; 8 Ind. 171; 10 id. 424. Such covenants, being in præsenti, do not run with the land in Massachusetts and most of the other states; but the rule is otherwise, either by statute or decision in Maine, 1888, p. 697, tit. 9, § 18; 72 Me. 369; Colorado, R. S. 1883, 172; Georgia, Code 1882, 672; New York, 13 Johns. 105; 29 Barb. 839; Ohio, 10 Ohio 327; Minnesota, 25 Minn. 496; Missouri, 44 Mo. 512; 2 McCrary 856; Indiana, 5 Blackf. 232; Wis- consin, 22 Wis. 495 (reversing the rule adopted in 5 Wis. 17); Iowa, 36 Ia. 232; South Carolina, 1 N. & McC. 104; Vermont, 52 Vt. 639; and possibly in Michigan. See Rawle, Cov. § 212. If the covenant is so linked with another covenant as to have a prospective operation it runs with the land; id. This covenant is usually coupled with that of seisin in considering this question, but it was not treated as running with the land in this country so readily as the latter; Rawle, Cov. § 212. Yet the incumbrance may be of such a character that its enforcement may consti- tute a breach of the covenant of warranty; as in case of a mortgage; 4 Mass. 349; 17 id. 586; 8 Pick. 547; 22 id. 494. The measure of damages is the amount of injury actually sustained; 7 Johns. 858;5 Me. 94; 12 Mass. 804; 3 Cush. 201; 20 N. Η. 869; 25 id. 229; Rawle, Cov. § 188. The covenantee may extinguish the in- cumbrance and recover therefor, at his elec- tion, in the absence of agreement; 4 Ind. 583; 19 Mo. 480; 25 Ν. Η. 229. See COVE- NANT; REAL COVENANT.