RECENTLY Dr. J. B. Miller described an ingenious device for the prolonged administration of an aerosol.1 The administration of water or a detergent solution (Alevaire2) as an aerosol vapor has proved an extremely effective way to liquefy tenacious secretions deep in the respiratory tract in such diseases as laryngotracheitis, interstitial pneumonitis, and atelectasis of the newborn.3
The purpose of this article is to describe a modified Miller apparatus which will operate indefinitely with a minimum of attention as long as supplied with fluid and compressed air or oxygen. Since the same level of fluid is maintained constantly in the nebulizer bulb, the apparatus will neither flood nor drain dry.
Dr. Miller found that a loaded De Vilbiss No. 40 nebulizer4 would produce a strong aerosol current when a source of compressed air or oxygen was substituted for the hand bulb supplied with the nebulizer. He connected