"On examining more minutely with the magnifier, open-mouthed bronchial twigs, and very small blood-vessels, were seen plugged up with solid and fluid carbon, and, from the appearance of the morbid structure, it was manifest, that the ulcerative process had effected a complete disorganization of the _bronchial_ tubes of every calibre, while the smaller _arterial_ vessels had alone suffered, leaving the larger ones entire. ["