The expectoration soon becomes watery and profuse, with little whitish specks, which contain great quantities of bacilli.
In bronchitis with profuse expectoration the use of morphine is particularly dangerous, as it is likely to check the cough so necessary for getting rid of the secretion, but in the converse condition it usefully allays the harassing cough by diminishing the excitability of the respiratory centre.
The pneumonia is usually lobular, the onset marked by rigors, with difficult and hurried breathing, cough and expectoration.
In phthisis also, although there may be some expectoration to bring up, yet a good deal of the irritation is in the lung substance, and the efforts of coughing are far greater and more continuous than are required for the removal of expectoration, and they simply exhaust the patient.