When the designation of hyaline membranes quoted by the Editor was used, I did not know how pertinent it really is. It has since become abundantly clear that hyaline membranes prevent neither entry nor exit of air. When a lung with hyaline membranes removed at necropsy from an infant dying about 6 to 24 hours after birth is inflated and then gradually deflated, it loses air at a higher pressure and more completely than does a normal one, and returns to its previous atelectatic state.

This content is only available via PDF.
You do not currently have access to this content.