September was now come, but as yet there was no abatement of the pestilence raging in the city. Indeed the accounts coming in of the virulence of the plague seemed worse than ever. Ten thousand deaths were returned in the weekly bill for the first week alone, and those who knew the state of the city were of opinion that not more than two-thirds of the deaths were ever really reported to the authorities. Hitherto the carts had never gone about save by night, and for all that was rumoured by those who loved to make the worst of so terrible a calamity, it was seldom that a corpse lay about in the streets for above a short while, just until notice of its presence there was given to the authorities.

But now it seemed as though nothing could cope with the fearful increase of the mortality. The carts were forced to work by day as well as by night; and so virulent was now the pestilence that the bearers and buriers who had hitherto escaped, or had recovered of the malady and thought themselves safe, died in great numbers. So that there were tales of carts overthrown in the streets by reason of the drivers of them falling dead upon their load, or of driverless horses going of their own accord to the pits with their load.

These terrible tales were reported to Mary Harmer and her nephews by the fugitives who sought refuge with her at this time. And very thankful did the lads feel to be free of the city and its terrors, albeit they never forgot to offer up earnest prayer for their father and mother and all their dear ones who were dwelling in the midst of so much peril. There was no hope of hearing news of them, save by hazard, whilst things were like this; but they trusted that the precautions taken, and hitherto successfully, would avert the pestilence from their dwelling, and for the rest the boys were too well employed to have time for brooding.

When their daily work at home was done, there were always errands of mercy to be performed to neighbours who had had sickness at home, or to the persons encamped in the fields, who were very thankful of any little presents of vegetables or eggs or other necessaries; whilst others of larger means were glad to buy from those who came to sell, and gave good money for the accommodation.

Mary Harmer had a large and productive garden and a large stock of poultry, so that she was able both to sell and to give largely; and the boys thought that working in the garden and looking after the fowls was the best sort of fun possible. They were exceedingly useful to her, and she kept them out of danger without fretting or curbing their eager spirit of usefulness. Of course, no person in those days could act with unselfish charity and not adventure something; but she took all reasonable precautions, and, like her brother, trusted the rest to Providence. And she believed that the boys were safer with her, even though not so closely restrained, than they would have been had they remained in the infected city, where the people now seemed to be dying like stricken sheep.

But the spirit of curiosity and love of adventure were not dead within the hearts of the boys; and although for some weeks they were fully contented in performing the duties set them by their aunt, there were moments when a strong curiosity would come over them for some greater sensation, and this it was which led them to an act of disobedience destined to be fraught with important consequences, as will soon be seen.

Mary Harmer's house was empty again, and she had promised to sit up for a night with a sick woman who lived some two miles off, and who had entreated her to come and see her. This was no case of plague, but fear of the infection had become so strong by this time that the sick were often rather harshly treated, and sometimes almost entirely neglected, by those about them. Mary Harmer had heard that this poor creature had been left alone by her son's wife, who had taken away her children and refused to go near her. Mary knew that her presence there for a while, and her assurances as to the nature of the malady, would be most likely to bring the woman to reason, so she decided to go and remain for one whole night, and she left her own cottage in the charge of the boys, bidding them take care of everything, and expect her back again on the following afternoon.

They were quite happy all that evening, seeing to the poultry, and running races with Fido in the leafy lane. They liked the importance of the charge of the house, although they missed the gentle presence of their aunt. They shut up the house at dark, and prepared their simple supper, and whilst they were eating it, Benjamin said:

"What shall we do tomorrow when we have finished our work?"

"I know what I should like to do," said Joseph promptly.