180 
At present we find the centres of our large towns at night 
practically unpopulated, only those remaining in them who cannot 
afford to migrate into the suburban districts ; and thus we have an 
especial instance where wealth mecessarily contributes to health. 
I have endeavoured to place before you some of the chief 
points in connection with this great and important subject of water 
and air, and have confined my remarks chiefly to those matters 
which have either been proved by chemical research, or which 
appear conclusive from reliable statistics. 
Science is at present receiving especial attention, and 
important results will be obtained. All its branches, if we 
“were able to see their terminations, would be found in human 
happiness and success. Some appear more immediately con- 
nected than others; and if the remarks which I have submitted 
have been uninteresting, I have the satisfaction, or dissatisfaction, 
of knowing that the subject is one of importance, and has only 
failed to appear so by my inability to place it before you in a 
more striking manner. 
Health, Temperance, and Morality may be classed together, 
and their accomplishment aided by the application of a knowledge 
of Chemistry and Physiology to domestic matters. 
