Popham ruled that 
assumpsit claims were valid, a decision called a "watershed" moment in English law, with archaic and outdated principles
Kaynak: Slade's Case"The writ of indebitatus 
assumpsit involved at least two averments, the debt or obligation and the 
assumpsit .  The former was the basis
Kaynak: Baltic Shipping Company v Dillonfirst the consideration requirement was at the heart of the action of 
assumpsit , which had grown up in the Middle Ages and remained the
Kaynak: Contracthtml EWHC KB J 17, (1615) Hobart 105, 80 ER 255 is a case on implied 
assumpsit  and past consideration  in English contract law .
Kaynak: Lamplugh v BrathwaitCollet originated as an 
assumpsit  case in Pennsylvania state court, but eventually came to the federal Circuit Court where the Circuit
Kaynak: Collet v. Colletbegan to overrule decisions made by the King's Bench on 
assumpsit, causing friction between the courts In Slade's Case, the Chief Justice
Kaynak: Court of King's Bench (England)Under the same practice the court may assess the damages in an action of 
assumpsit on a foreign bill payable in pounds sterling.
Kaynak: Brown v. Van BraamAs the original lease agreement no longer existed Campbell sued Milton under an action of 
assumpsit (or breach of promise to pay) for use
Kaynak: James Milsonbegan to overrule decisions made by the King's Bench on 
assumpsit, causing friction between the courts In Slade's Case, the Chief Justice
Kaynak: Bill of Middlesexbegan to overrule decisions made by the King's Bench on 
assumpsit, causing friction between the courts In Slade's Case, the Chief Justice
Kaynak: Court of Common Pleas (England)compensation for services, the plaintiff cannot abandon the contract and resort to an action for a quantum meruit on an implied 
assumpsit .
Kaynak: Quantum meruitPlaintiff's counsel concluded his averments  by arguing that even if brought in 
assumpsit , the action would have alleged the same basis
Kaynak: Priestly v Fowlerof implied contract, as shewn in the evolution of the action of 
assumpsit and its development from case; of the liability of the agent,
Kaynak: Nocton v Lord Ashburtonaffection is not a sufficient ground for an 
assumpsit without quid pro quo  (3) the contract should have been pleaded as an action for debt.
Kaynak: Bret v JSNo wager of law was allowed in 
assumpsit , even though the cause of action were a simple debt.  general adoption of 
assumpsit - proceeding
Kaynak: Legal wager