6e
Materia Medic a.
Part IL
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From its effect, in permanently dilating the pupil, ProfessorReimarus proposed, and tried with success, the dropping alittle of the infusion into the eye, a few hours before perform-ing the extraction for the cataract, with a view of facilitatingthe operation.
AVENA SATIVA. Ed.
Willd. g. 142, sp. 13. Triandria Digynia-—"Nat. ord. Gra~mina.Oats.
Off. —The husked seed ; groats.AvENJE SATIVA semen. Ed.AVENTE SEMINA. Lond.
This is a well-known annual plant, which is very generallycultivated in northern countries, and in many places furnishestheir principal subsistence. When simply freed from the husks,this grain gets the name of groats, but it is more frequent-ly ground into meal. Groats arc made use of in broths. Oat-meal i6 baked with salt and water into cakes, or, with the sameadditions, is boiled to form porridge, two very importantarticles of food in this country. An infusion of the husks inwater, allowed to remain till it becomes acidulous, is boileddown to a jelly, which is called sowins. In all these forms itis nutritious, and easy of digestion.
Vauquelin found in the ashes of oats, phosphate of lime andsilica.
Med. use. —Gruels or decoctions, either of groats or oat-meal, either plain or acidified, or sweetened, form an excel-lent drink in febrile diseases, diarrhoea, dysentery, &c. andfrom their demulcent properties, prove useful in inflammatorydisorders, coughs, hoarseness, roughness, and exulcerationsof the fauces. Porridge is also frequently applied to phleg-menous swellings, to promote their suppuration.
Bitumen petroleum, v. s. Petroleum Barbadensc. Ed.Petroleum. Lond.
Petroleum earbadense, s. s. Bitumen Petroleum. Dub.Rock oil. Barbadoes tar.
Bitumen is now employed as the generic name for severalinflammable bodies of different degrees of consistency, fromperfect fluidity to that of a brittle but very fusible solid, andof little specific gravity. Xhey are insoluble in alcohol or inwater, combine with essentUi ™i<. „ n( j su iphur, decompose on-ly a small proportion of nitrate of pou.__ w defWrot.ion, andon inflammation leave little or no residuum. »itumeu*, .
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