No efforts could trace the place of their retreat.
In the meanwhile the excessive indignation of the Council of Regency, at the slight put upon their authority by the murder of Porteous, had dictated measures, in which their own extreme desire of detecting the actors in that conspiracy were consulted in preference to the temper of the people and the character of their churchmen.

An act of Parliament was hastily passed, offering two hundred pounds reward to those who should inform against any person concerned in the deed, and the penalty of death, by a very unusual and severe enactment, was denounced against those who should harbour the guilty.

But what was chiefly accounted exceptionable, was a clause, appointing the act to be read in churches by the officiating clergyman, on the first Sunday of every month, for a certain period, immediately before the sermon.

The ministers who should refuse to comply with this injunction were declared, for the first offence, incapable of sitting or voting in any church judicature, and for the second, incapable of holding any ecclesiastical preferment in Scotland.
This last order united in a common cause those who might privately rejoice in Porteous's death, though they dared not vindicate the manner of it, with the more scrupulous Presbyterians, who held that even the pronouncing the name of the "Lords Spiritual" in a Scottish pulpit was, _quodammodo,_ an acknowledgment of prelacy, and that the injunction of the legislature was an interference of the civil government with the _jus divinum_ of Presbytery, since to the General Assembly alone, as representing the invisible head of the kirk, belonged the sole and exclusive right of regulating whatever pertained to public worship.

Very many also, of different political or religious sentiments, and therefore not much moved by these considerations, thought they saw, in so violent an act of parliament, a more vindictive spirit than became the legislature of a great country, and something like an attempt to trample upon the rights and independence of Scotland.