 | William Harvey Wells - 1862 - 240 pages
...poison, without any sudden or alarming symptoms of disease, and so the process is allowed to -go on. It is a reproach to the age in which we live, that with so many opportunities for advancement, the heating and ventilation of most of the school-buildings... | |
 | William Harvey Wells - 1877 - 270 pages
...poison, without any sudden or alarming symptoms of disease, and so the process is allowed to go on. It is a reproach to the age in which we live, that with so many opportunities for advancement, the heating and ventilation of most of the school-buildings... | |
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... this supply. The consequence is, that most of the pupils in our schools are compelled to inhale a small amount of poison at every breath. But most constitutions can bear a gradual undermining by slow poison, without any sudden or alarming symptoms... 