“Here the patients labouring under fever were dispersed among invalids of almost every other description; so that, whatever effluvia emanated from infected bodies became immediately diluted in the mass of air free from such pollution. Here, accordingly, no instance occurred of the propagation of fever. None of the nurses were attacked, nor were patients lying in the adjacent beds in any instance infected, though cases of the worst description, some of them exhibiting all the symptoms of typhus gravior, were placed promiscuously among the other patients, scarcely two feet of space intervening between the beds[334].” The same practice was kept up in the Edinburgh Infirmary until 1858 or longer; Christison, who gives a diagram of an ordinary ward with four fever-beds in it, declared in 1850 that there had been no spread of fever for fifteen years before, except on one occasion, when the rules of the house were neglected[335]. The bold policy of dispersing fever-patients among the healthy was begun by Pringle and Donald Monro during the campaigns of 1742-48 and 1761-63 in the Netherlands and North Germany. They found that concentration raised the contagion to high degrees of virulence and that dispersion weakened it to the point of non-existence, Monro’s success at Paderborn in 1761 having been of the most signal kind[336]. The Select Committee of 1818 were more influenced by what they were told of the good effects of the earliest Houses of Recovery, at Waterford, Manchester and other places in the end of the last century. For several years after their opening they were little needed, the epidemic which gave the immediate impulse to their establishment having subsided in due time both in the towns provided with Houses of Recovery and in the innumerable places where no such provision had been made. The recommendations of the Committee do not appear to have been carried out; for the London Fever Hospital, in Pancras Road, which had been enlarged to seventy beds when the epidemic began in 1817, remained the only special fever hospital in London until the establishment of the hospitals of the Metropolitan Asylums Board in 1870[337]. * * * * *