Law Courts 203 years uncertainty arose as to just what it had been the intention to include in this restriction. It was finally interpreted as applying to felonies and all the more serious crimes, also to new matter made punishable or actionable by statute. In this crippled condition, the outlived the middle ages, and the sheriff, who had been a dangerous local power for four centuries and against whom a long line of strong kings had waged relentless war, was fast becoming a minor executive officer in the county. x The justices of the peace, as judges acting under royal commission, of course used the jury procedure of the older royal courts; but they had to deal with many petty offences which demanded a summary process. The variety of their work led to a distinction in the business and names of their sessions of court. A single justice exercised many police functions and was empowered by statute to deal with a few petty offences. His principal business was to conduct preliminary hearings.2 Two or more justices could act together in what came to be known as Petty Sessions; they sat usually, but not neces- sarily, at an accustomed time and place and for a definite part of the county, often the hundred. They dealt with many cases summarily3 and with some that required jury trial. The chief court held by the justices was, from the 1 The sheriffs were much hated in the fourteenth century as exploiters of the counties. They took the counties at a rent and got what they could out of them. This started an attempt by Parliament, evidenced by a series of acts, running from 1354 to 1444, to make the sheriff an annual offi- cer. This succeeded in the fifteenth century and was decisive in the sher- iff's decline. He was no longer the military and police head of the county. He carried out the courts' orders, such as seizing property, maMng arrests, keeping the gaol, and hanging felons. The office became undesirable and much of the work was often left to an undersheriff, for whom the sheriff was responsible. By the seventeenth century it was hard to get men to take the office of sheriff; but they could be, and were at times, compelled to do so. Yet in his low estate the sheriff still kept his ceremonial dignity —"he is the greatest man in the county and should go to dinner before the Lord Lieutenant." On the sheriff's decline, see Jenks, Government of the British Empire, p. 326. t . 3 That is, committing to prison or letting out oa bail before trial, or dismissing the charge. s Below the indictable offences was growing a class of pettier offences which could be tried without jury before the justices of the peace. They were all created by statute.