PRACTICAL RELATIONS OF SCIENCE. 121 
5. The right drainage and drying of the basement in all 
habitations, and the prevention of moisture from rising up the 
walls, wherever this may be necessary; a layer of brick or 
or stone, set in asphalt, or other materials capable of producing 
an equivalent effect. 
6. The provision and preservation of pure water. Many 
are the wells contaminated by water from drains, cesspools, or 
imperfect precautions at a higher level. Where the use of 
iced water may contribute to prevent many impurities from 
being detected by the smell, which would otherwise become 
immediately manifest, the condition of the water should be 
frequently examined after heating it. 
7. The introduction of a system of drying all animal or 
vegetable refuse, or excretion, wherever they are prone to run 
into putrefaction and contaminate the atmosphere or water in 
their vicinity. This may be effected by cold, by the addition 
of dried earths, charcoal or other absorbents. Various chem- 
icals, such as lime, chloride of lime, and salts of iron may be 
used in addition, when requisite. 
8. The provision of means of controlling, destroying, or 
absorbing noxious fumes from special manufactories. 
9. The appointment of one or more inspectors of health for 
every city or populous district, and the better appreciation of 
the value of the services of the medical profession in preventing 
disease. 
10. The formation of a code of health, and the passing of 
an enabling act that will give facilities to every city, town, 
village or populous district to introduce measures for sanitary 
improvement, and for promoting exercise and suitable recrea¬ 
tion among the 'whole population. 
These are the leading desiderata in sanitary improvement. 
Their influence on the health and happiness of the people 
can scarcely be overestimated. But how are they to be origi¬ 
nated and sustained in individual districts, if education in 
science be not introduced in the Common School. They de¬ 
mand improvement in Architecture, Arts and Manufactures. 
They require the co-operation of public authority and individual 
