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Epithelioma of the Thyroid Gland and Trachea
1890
The Journal of Laryngology and Rhinology
depression and drawing in of the lower ribs, and consequent diminution of the area of the floor of the chest cavity. This is well illustrated by cases ; , of chronic emphysema. ' •;' Now, in order to judge of the relative merits of these two forms of inspiration, we have only to regard the chest cavity as a cone, and apply : the ordinary mathematical formula for such: V = ~ TT r". We can : now see at a glance that the volume of the chest can only be materially " increased by increasing the area
doi:10.1017/s1755145500148535
fatcat:fkohqs55pvbdtbyhxuux5wwogi