Ossein, [218].
Overstudy, [211].
Oxidation, defined, [106].
Oxygen, [104]-[117].
Combined, [105], [113].
Free, [105], [113].
How it unites, [105].
Main uses of, [108].
Movement a necessity, [106], [108], [115].
Movement in body, [106], [108], [115].
Nature of, [104].
Passage of, from cells, [110].
Passage of, through blood, [109].
Passage of, toward cells, [109].
Preparation of, [113].
Pressure, [109].
Properties of, [113].
Purpose of, in the body, [106].
Oxyhemoglobin, [27].
Pacinian corpuscles, [342], [343].
To demonstrate, [348].
Pancreas, [155].
Pancreatic juice, [155].
Papillæ, [266].
Patent medicines, [166].