Cases in which fetor is a conspicuous symptom: Odor putrid. Due to retention and decomposition of plasmic exudation from atrophied bone and mucous membrane (common). Due to necrosis of the bones within or bordering upon the nose (rare). Due to decomposition of muco-pus in the maxillary sinus (rare). Odor musty. Due to partial decomposition in small patches of desiccated mucous crusts (common). Due to morbid secretion unaccompanied by profound alteration in the structure of the nose (rare). Due to ulcerations of the mucous membrane (rare). Cases in which a sense of dryness is a conspicuous symptom: Due to ineffective erectile tissue permitting air imperfectly warmed to enter the nose and the pharynx (often met with in neurosis). It is caused by temporary constriction of the erectile tissue or by the atrophy of the tissue. Due to neurosis. Neurotic patients will often complain of a sense of dryness in the nose and the naso-pharynx when all the conditions of excessive mucoid discharge are present. Cases in which hyperæsthesia exists, so that slight lesions that in any way interfere with the nasal functions form the basis of persistent complaint (not infrequent). Epistaxis. Epistaxis, or nose-bleed, is a form of local hemorrhage perhaps of more frequent occurrence than hemorrhage from any other mucous surface of the body. This is doubtless owing to the extreme vascularity of the lining membrane of the nose and the special arterio-venous (cavernous) spaces of the turbinated bones; and the bleeding may be said to be of grave character in proportion as these spaces are involved. In some individuals a special disposition to nasal hemorrhage exists. From the fact that the affection is transmitted from parent to offspring, and is frequently found in all members of a given family, this form of hæmophilia is probably dependent upon some structural peculiarities in the cavernous spaces.