without the sound of Bow bells. A comparison between the number of
fires which occurred between the years 1838 and 1843, in 20,000 houses
situated on either side of the Thames, shows at once the superior
safety of its northern bank, the annual average of fires on the latter
being only 20 against 36 on the southern side. For this exemption we
have to thank the great disaster, if we might so term what has turned
out a blessing. At one fell swoop it cleared the city, and swept away
for ever the dangerous congregation of wooden buildings and narrow
streets which were always affording material for the flame.

The means to be adopted to prevent the flames spreading, resolve
themselves into taking care not to open doors or windows, which create
a draught. The same rule should be observed by those outside; no door
or glass should be smashed in before the means are at hand to put out
the fire.

_Directions for aiding persons to escape from premises on fire._

1. Be careful to acquaint yourself with the best means of exit from
the house both at the top and bottom.

2. On the first alarm reflect before you act. If in bed at the time
wrap yourself in a blanket, or bedside carpet; open no more doors
or windows than are absolutely necessary, and shut every door after
you.

3. There is always from eight to twelve inches of pure air close to
the ground: if you can not therefore walk upright through the
smoke, drop on your hands and knees, and thus progress. A wetted
silk handkerchief, a piece of flannel, or a worsted stocking drawn