Sec. 1. (I) Scope of the subject.
Sec. 2. (II) Origin of quasi contracts.
Sec. 3. (III) Nature of quasi contracts: (1) Chief characteristics.
Sec. 4. (2) Quasi contracts distinguished from contracts.
Sec. 6. (4) Quasi contracts distinguished from equitable obligations.
Sec. 7. (IV) Essential elements of quasi contractual obligation.
Sec. 8. (1) Receipt of a benefit.