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JAMA. 1892;XVIII(22):671-672. doi:10.1001/jama.1892.02411260013001f.
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This apparatus is especially constructed to aid the clearing out of secretions and stagnant air contained in the lungs under certain conditions of disease, such as emphysema, and bronchiectasis, or either of them alone whether associated or not with the profuse bronchial catarrh usual to these distressing troubles.

Abundant expectoration is brought about, the tendency to pulmonary œdema is lessened, and a freer and more natural circulation both of the air and the blood currents within the thorax is produced by the proper use of this devise.

The following is Dr. Denison's description of this lung compressor extracted from his address as President of the American Climatological Association, Sept. 1890, on "Abnormal Intra-Thoracic Air Pressures:"

Before leaving this subject, I wish to describe a device I have had constructed for the self-treatment of emphysema. We will call it the Portable Lung Compressor. It was suggested to me by the "Rossbach


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