Problems.—A study of respiration to find out:—
(a) What changes in blood and air take place within the lungs.
(b) The mechanics of respiration.
A study of ventilation to discover:—
(a) The reason for ventilation.
(b) The best method of ventilation.
A study of the organs of excretion.
Laboratory Suggestions
Demonstration.—Comparison of lungs of frog with those of bird or mammal.
Experiment.—The changes of blood within the lungs.