from the serf class was comparatively small, and it may well be that the labour of an ordinary serf was not practically more severe, and the remuneration in maintenance and kind not much less than that of agricultural labourers in recent times. In spite of the steady protest of the Church, slavery (as the exception, not the general rule) did not die out for many centuries, and was apt to be revived as a punishment for criminals, e.g. in the fierce provisions of the statute of Edward VI against beggars, not repealed until 1597. At no time, however, was it general, and as the larger village and city populations grew the ratio of serfs and slaves to the freemen in the whole population rapidly diminished, for the city populations "had not the habit and use of slavery," and while serfs might sometimes find a refuge in the cities from exceptionally severe taskmasters," there is no doubt that freemen gradually united with them under the lord's protection, that strangers engaged in trade sojourned among them, and that a race of artisans gradually grew up in which original class feelings were greatly modified." Boroughs, guilds and agricultural labour From these conditions grew two parallel tendencies in regulation of labour. On the one hand there was, under royal charters, the burgh or municipal organisation and control of artisan and craft labour, passing later into the more specialised organisation in craft guilds; on the other hand, there was a necessity, sometimes acute, to prevent undue diminution in the numbers available for husbandry or agricultural labour. To the latter cause must be traced a provision appearing in a succession of statutes (see especially an act of Richard II., 1388), that a child under twelve years once employed in agriculture might never be transferred to apprenticeship in a craft. The steady development of England, first as a woolgrowing, later as a cloth-producing country, would accentuate this difficulty. During the 13th century, side by side with development of trading companies for the export of wool from England, may be noted many agreements on the part of monasteries to sell their wool to Florentines, and during the same century absorption of alien artisans into the municipal system was practically completed. Charters of Henry I. provided for naturalisation of these aliens. Trend towards statute law From the time of Edward I to Edward III a gradual transference of burgh