Things belong- ing to another thing as principal, and which pass as incident to the principal thing. 10 Pet. 25; Angell, Wat. C. 7th ed. § 153 a; 1 S. & R. 169; 5 id. 110; Cro. Jac. 121; 1 P. Wms. 603; Cro. Jac. 526; 2 Coke 32; Co. Litt. 56, 56 a, b; 1 Plowd. 171; 2 Saund. 401, n. 2; 1 B. & P. 371; 1 Cr. & M. 439; 4 Ad. & E. 761; 2 Nev. & M. 517; 74 Pą. 25. See 13 Am. Dec. 657. The word has a technical signification, and, when strictly considered, is employed in leases for the purpose of including any easements or servitudes used or enjoyed with the demised premises. When thus used, to constitute an appurtenance there must exist a propriety of relation between the principal or dominant subject and the accessory or adjunct, which is to be ascer- tained by considering whether they so agree in nature or quality as to be capable of union without incongruity; 53 N. H. 508. Thus, if a house and land be conveyed, everything passes which is necessary to the full enjoyment thereof and which is in use as incident or appurtenant thereto; 1 Sumn. 492. Under this term are included the cur- tilage; 2 Bla. Com. 17; a right of way, 4 Ad. & E. 749; water-courses and secondary ease- ments, under some circumstances; Angell, Wat. C. 7th ed. § 153 a: a turbary, 3 Salk. 40; and generally, anything necessary to the enjoyment of a thing; 4 Kent 468, n.; 81 N. Y. 557; 55 id. 98; but it is the general rule that. land cannot pass as appurte- nant to land; 49 Barb. 501; 10 Pet. 25; 2 Murph. 341; but it may be aliter to give effect to the intent of a will; 9 Pick. 293; and in Pennsylvania where first purchasers of 5000 acres from the proprietary obtained city lots, incident to their purchase, it was held that the lots passed as appurtenant to a grant of 5000 acres; 4 Yeates 142; also flats pass as appurtenant to the fast land on a river front; 18 W. N. C. (Pa.) 73; and the land covered by the water-power will pass as appurtenant to a saw-mill; 74 Pa. 25. See also 5 Pa. 126; 110 Pa. 370. The mere use of the term "appurte- nances," without more, will not pass a right of way established over one portion of land merely for convenience of the owner, it not being a way of necessity; 68 N. Y. 62; s. c. 23 Am. Rep. 149. If a house is blown down, a new one erected there shall have the old appurte- nances; 4 Coke 86. The word appurtenances in a deed will not usually pass any corporeal real property, but only incorporeal ease- ments, or rights and privileges; Co. Litt. 121; 8 B. & C. 150; 6 Bingh. 150; 1 Chit. Pr. 158,4; 2 Washb. R. P. 317, 327; 3 id. 418. See APPENDANT. Appartenances of a ship include whatever is on board a ship for the objects of the voy- age and adventure in which she is engaged, belonging to her owner. Ballast was held no appurtenance; 1 Leon. 46, Boats and cable are such; 17 Mass. 405; also, a rudder and cordage, 5 B. & Ald. 942; 1 Dods. Adm. 278; fishing-stores, 1 Hagg. Adm. 109; chronometers, 6 Jur. 910; see 15 Me. 421. For a full and able discussion of the subject of appurtenances to a ship, see 1 Pars. Marit. Law 71-74; see 2 Sawy.201."Appurte- nances" used in the right to levy and collect taxes on a "bridge and its appurtenances," included the approaches to the bridge or any buildings erected by the Bridge Company within the corporate limits of the city. 154 Ky. 578, 157 S. W. 1105.