OZONUM.

Ozone, Nascent oxygen.

Authorities.

1 , Dewar and McKendrick's Nature, 9, p. 104, experiments on themselves by breathing ozonized air for eight minutes, when they were obliged to desist; 2 , Hearder, Nature, 9, 182, effects of ozonized air; 3 , Dr. J. T. O'Connor, MSS., effects of inhaling Ozone.

EYE, NOSE AND THROAT

• Tingling of the conjunctiva and skin of face, 1.
• Sneezing, with the cough, 1.
• Irritation of the fauces and glottis, 1.

RESPIRATORY ORGANS AND CHEST

• The experiment was followed by violent irritating cough and sneezing, and for five or six hours thereafter by a sensation of rawness in the throat and air-passages, 1.
• A considerable amount of irritation over the respiratory tract, very similar to that experienced when recovering from an attack of influenza, and I found that I could often produce the same irritation by removing the prime conductor from the cylinder of an electrical machine, and holding my face in such a position as to breathe the copious ramifications of electricity that were thrown off from it, 2.
• A suffocating feeling in the chest; a tendency to breathe slowly, 1.

BACK AND EXTREMITIES

• Pain excessive in whole sacral region, apparently in the articulations especially a sensation of tiredness all through the pelvic viscera, even in the perineum, 3.
• The thighs and legs feel as if overworked; excessively fatigued, 3.

SKIN

• A tingling of the skin of the face and conjunctivæ, 1.