394 The Period of Constitution iviafcing portance is attached to the beginnings of things really great, petty and obscure influences may play a great role.1' There was a £J2L^ecline in boroughs receiving the summons from the_one^_hundred to^about 1445 when only Then~TKere~"was a slow new boroughs were added later in Henry VI.'s reign, and Edward IV. added or restored five. Under the later Tudors there was a rather rapid increase. But there is much evidence that there was a tremendous gap between the number of boroughs receiving the summons and nominally returning members and the number of burgesses actually present at a session in Westminster. A careful study of the expense records indicates that in many, perhaps most, Parliaments of the fourteenth and fifteenth centuries the number of burgesses fell below the stable seventy-four knights always present for the thirty-seven shires. Thus it was not alone in status and influence that the knights were above the burgesses in the early Commons, but in numbers also.2 The sheriff had about as much opportunity to manipu- late borough as county representation. The writ ordering the election passed through his hands and he might be induced not to send it. Such suppression of writs seems to have occurred occasionally in the last half of the fourteenth century and later, when the list of boroughs that commonly sent representatives had become quite fixed.3 Moreover, it was possible for the sheriff, since the names of the borough members had to be returned through him together with the results of the shire elec- tions, to change the names. This left the boroughs quite powerless since the Chancery did not ordinarily go back of the sheriff's returns. There was no reason for this abuse until seats in Parliament were regarded as worth something. It was somewhat lessened through the peti- 1 For a full discussion of this subject, see Riess, Wahlrecht, ch, ii. 2 Pollard, Evolution of Parliament, pp. 316-319. * A statute of 1382 provided for the punishment of sheriffs who omitted boroughs that had before sent members.