37. Extinction by dissolution of right of servient owner
40. Extinction on expiration of limited period or happening of dissolving condition
41. Extinction on termination of necessity
42. Extinction of useless easement
43. Extinction by permanent change in dominant heritage
44. Extinction on permanent alteration of servient heritage by superior force
45. Extinction by destruction of either heritage
46. Extinction by unity of ownership
47. Extinction by non-enjoyment
48. Extinction of accessory rights
50. Servient owner not entitled to require continuance
Compensation for damage caused by extinguishment or suspension