In old English law. Oath; an oath. Sermo index animi. 5 Coke, 118. ‘Speech hi an Index of the mind. Sermo relatns ad personam intelligi debet de eonditiono persona). Language which la referred to a person ought to be understood of the condition of the person. 4 Coke, 16. Sermones semper m aceipiendi sunt se-enndnm subjeotam materlam, et conditionem personaram. 4 Coke, 14. Language is always to be understood according to its subject matter, and the condition of the persons.