APHRONITRE

APHRONITRE, Aphronitrum, a kind of Nitre, mentioned by the Ancients; supposed to be the Spume, or the lightest and subtilest Part thereof, emerging to the top. See NITRE.
Some modern Naturalists rather take the ancient Aphronitre to have been a Native Salt-Petre; now called Salt-Petre of the Rock. See SALT-PETRE.
The Word is compounded of the Greek ἀφρός, Foam, and νίτρον, Nitre.



APHTHAE, in Medicine, little Ulcers or Pimples rising in the Mouth, the Palate, Gums, at the Root of the Tongue, &c. See ULCER, &c. Even Sucking Children are particularly subject to these Pimples when either the Nurse’s Milk is corrupted or the Child’s Stomach becomes unfit for Digestion; for in those cases, the sharp acrimonious parts of the Milk rising easily exulcerate those tender and delicate parts. There are some of these Aphthae white, others red, others livid and blackish: The white and red are the least dangerous, and the most easily cured; the livid and black often prove mortal. When they happen in grown Persons, they are owing to thin, serous, and sharp Humours returned from the several parts of the Body to the Mouth. A Liniment of Mell Rosarum and Oil of Vitriol, is esteemed a good Remedy for the Aphthae. The Word seems derived from the Greek ἄφθαι, to corrupt or from ἅπτω, to kindle.

APHRONITRE