 | Charles Turner Thackrah - 1831 - 140 σελίδες
...bronchial membrane. This membrane is affected by gaseous agents; but much more by palpable substances. Dust of every kind irritates, but not in an equal...the size and figure of the particles which enter the airtube. The dust from the roads produces no apparent mischief, while the mason's chippings from the... | |
 | Charles Turner Thackrah - 1832 - 260 σελίδες
...bronchial membrane. This membrane is affected by gaseous agents ; but much more by palpable substances. Dust of every kind irritates, but not in an equal...the size and figure of the particles which enter the airtube. The dust from the roads produces no apparent mischief, while the mason's chippings from the... | |
 | 1877 - 1380 σελίδες
...easily expectorated. Another reason for this difference is suggested by an English writer thus: — "Dust of every kind irritates, but not in an equal...roads produces no apparent mischief, while the mason's chippings from the stone occasions serious and often fatal injury to his lungs. The dust from old iron,... | |
 | 1877 - 1034 σελίδες
...easily expectorated. Another reason for this difference is suggested by an English writer thus:—"Dust of every kind irritates, but not in an equal degree....dust from the roads produces no apparent mischief, while.the mason's chippings from the stone occasions serious and often fatal injury to his lungs. The... | |
 | Connecticut. State Department of Health - 1882 - 930 σελίδες
...easily expectorated. Another reason £or this difference is suggested by an English writer thus: — "Dust of every kind irritates, but not in an equal...roads produces no apparent mischief, while the mason's chippings from the stone occasions serious and often fatal injury to his lungs. The dust from old iron,... | |
 | 1904 - 1652 σελίδες
...easily expectorated. Another reason for this difference is suggested by an English writer thus:—" Dust of every kind irritates, but not in an equal...dust from the roads produces no apparent mischief, while.the mason's chippings from the stone occasions serious and often fatal injury to his lungs. The... | |
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Dust of every kind irritates, but not in an equal degree. Much I conceive depends on the size and figure of the particles which enter the air tube. The dust from the roads produces no apparent mischief, while the mason's chippings from the stone occasions... 