(705 ILCS 35/4) (from Ch. 37, par. 72.4)
    Sec. 4. There shall be no stated terms in the circuit courts, which shall always be open for the transaction of all business, subject to adjournment from time to time. The circuit judges in each circuit shall prescribe by rule the times of calling grand and petit juries in each of the counties of the circuit and the periods for which the jurors shall serve.
(Source: Laws 1963, p. 2642.)