Constitution of the State of Texas 1876 Art. 5, § 13. Number of grand and petit jurors;  number concurring

Sec. 13. Grand and petit juries in the District Courts shall be composed of twelve persons, except that petit juries in a criminal case below the grade of felony shall be composed of six persons;  but nine members of a grand jury shall be a quorum to transact business and present bills.  In trials of civil cases in the District Courts, nine members of the jury, concurring, may render a verdict, but when the verdict shall be rendered by less than the whole number, it shall be signed by every member of the jury concurring in it.  When, pending the trial of any case, one or more jurors not exceeding three, may die, or be disabled from sitting, the remainder of the jury shall have the power to render the verdict;  provided, that the Legislature may change or modify the rule authorizing less than the whole number of the jury to render a verdict.