The cross of St. Anthony was a crutch, such as was used by the Crutched Friars. It was painted in blue on canvas or board, and the legend under or over the cross was 'Lord have mercy upon us.' In the plague of 1563 it was ordered, on the 3rd of July, that two hundred blue headless crosses be made with all convenient speed by the Chamberlain, and again, on the 6th of the same month, two hundred more were ordered. On the 8th of July blue crosses were delivered to the Bailiff of Finsbury to be used there.[175] Dr. Creighton says that before the plague of 1603 the colour of the crosses had been changed to red. The white rod or wand was used in France as well as in England, as we learn from a letter of the Venetian Ambassador to France (20th November 1580): 'This city [Paris] I hear is in a very fair sanitary condition, notwithstanding that as I entered a city gate, which is close to where I reside, I met a man and a woman bearing the white plague wands in their hands, and asking alms; but some believe that this was merely an artifice on their part to gain money.'[176] The white wand was afterwards retained as the peculiar badge of the searchers of infected houses and of the bearers of the dead. In 1603 it had become a red wand, just as the blue cross had become a red one. The regulation about dogs is of great interest, as it incidentally shows that dogs were commonly kept in London houses for the purpose of protection. It was believed that dogs carried infection in their hair. Brasbridge, in his _Poor Man's Jewel_, 1578, relates how, 'not many years since, I knew a glover in Oxford who, with his family, to the number of ten or eleven persons, died of the plague, which was said to be brought into the house by a dogge skinne that his wife bought when the disease was in the citie.' The plague orders contained the clause against dogs to the last, and thousands of them were killed. A proclamation during the London plague of 1563 was directed against cats as well as dogs.[177] The early literature of the plague is very unsatisfactory, and we have to come to a time much later than the mediæval period for information as to treatment. The main points of the various regulations were isolation of the infected and special attention to sanitation. These in principle are in accord with the best opinion of to-day, but the way in which they were carried out left much to be desired. Those who were imprisoned in their houses must have felt that they were given over to death. Yet some of these patients did recover, and we naturally ask what was the treatment which caused these cures? Was the cure due to the doctor or to nature alone? The answer is not easy to find.