It is evident that as the latter increases in bulk, more and more attention must be paid to the dangers of uprooting by winds and storms. Various mechanisms have been adopted in different cases, some connected with the subterranean and others with the sub-aerial portions of the plant.
They are generally obtained during the dry summer months, as at other times their adherence to the stems is so firm as often to cause the uprooting of the plants in the attempt to remove them.
From the Grisons, who favoured France and Venice, Spain seized the Valtelline in 1620, incidentally uprooting heresy there by the massacre of six hundred Protestants.
The supposition that the tree was the source of Christ's crown of thorns gave rise doubtless to the tradition current among the French peasantry that it utters groans and cries on Good Friday, and probably also to the old popular superstition in Great Britain and Ireland that ill-luck attended the uprooting of hawthorns.
Discontent showed itself in pillage and incendiarism on country estates; between March and July 1789 more than three hundred agrarian riots took place, uprooting the feudal idea of property, already compromised by its own excesses.