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A C O Roman church, viz. the religious of the holy sacrament, who keep up a perpetual adoration, fome one or other of them praying before the holy sacrament, day and night.  ACOLASTRE, a small river of France in the Nivernois.  ACOLCHICHI, in ornythology, a barbarous name of the phœnicopterus, a bird of the order of grallæ. See ACOLIN, an obsolete name of a species of the tetrao, of the order of gallinæ. See. , in geography, a river of France which takes its rise in the Bourbonnois. ACOLUTHI, a term applied to persons who were firm and steady in their opinions, and particularly to the stoics, who were remarkably tenacious of their resolutions and principles. In church-hiftory, the term acolythus, or acolythist, is peculiarly applied to candidates for the ministry who continually attend the bishops. ACOLYTHIA, in the Greek church, denotes the office or order of divine service; or the prayers, ceremonies, hymns, &c. whereof the Greek service is composed. ACOMA, a town of N. America, in New-Mexico, seated on a high mountain, with a strong caftle. It is the capital of the province, and was taken by the Spaniards in 1599, 108. 35. W. long. 35. 0. lat. ACOMAC, a county of Virginia, in N. America, being a peninsula, bounded on the N. by Maryland; on the E. and S. by the ocean, and on the W. by the bay of Chese-peak. Cape Charles is at the entrance of the bay, being the most southern promontory of this county.  ACONITUM, in botany, a genus of the polyandria trigynia. There are seven species of the aconitum. 1. The lycoctonum, is a native of Lapland, Switzerland, and other hilly countries of Europe. 2. The uncinatum, is a native of Philadelphia. 3. The variegatum grows on the Italian and Bohemian mountains. 4. The napellus, is a native of Switzerland, Bavaria, and France. 5. The Pyrenaicum, is a native of Siberia, Tartary, and the Pyren ACQ Acora, alfo fignifies medicines for refreshing the body after great fatigue. ACOPAM. See AcoPA. ACOPIS, a kind of foflil, mentioned by Pliny. ACOPUM, among ancient phyficians, a topical medicine compofed of warm and emollient ingredients for allay- ing the fenfe of wearinefs. ACORES, in geography. See AzORES. ACORN, the fruit of the oak-tree. See QUERCUS. ACORUM, in botany, a fynonime of the acorus, ACORUS. See ACORUS, in botany, the fweet-fmelling flag or cala- mus, a genus of the hexandria monogynia clafs. It' is a native of this as well as other European countries. There are three varieties of this genus, ois, the aco- rus calamus; the vulgaris, or aromaticus of the ſhops; and the verus, which chiefly grows in the Indies, Acosus, in mat, med. a name fometimes given to the great galangal. See GALANGAL Acorus, in botany, is likewife a fynonime of the iris pfeudacorus. See Ins. ACOUSMATICI, fometimes alfo called Acsuftici, in Grecian antiquity, fuch difciples of Pythagoras as had not completed their five years probation. See Pr- THAGOREAN philofophy. ACOUSTIC, in general, denotes any thing that relates to the ear, or the fenfe of hearing. Acoustic dat, in anatomy, the fame with meatus au- ditorius, or the external paffage of the ear. See A- NATOMY, Part VI. AcouSTIC inftrument, an inftrument made in the form of a horn, perforated at the finall end, to aflift hear ing, ACOUSTIC nerve, the fanfe with the auditory nerve. See ANATOMY, Part V. and Auditory nerve. ACOUSTICS, with phyficians, medicines for curing deafnefs, ACQS, a town at the foot of the Pyrenæan mountains in the government of Foix in France. It takes its name from the hot waters in thefe parts; 1. 25. E. long. 43. o. lat. ACQUA, a town in the Grand Dutchy of Tufcany, where there are warm baths, 12. 5. E. long. 43- 45. lat. ACONE, a fpecies of whet-ftone. See Cos. ACONITUM, in botany, a genus of the polyandria trigynia. There are feven fpecies of the aconitum. 1. The lycottonum, is a native of Lapland, Switzerland, and other hilly countries of Europe. 2. The unci- natum, is a native of Philadelphia. 3. The variega- tum grows on the Italian and Bohemian mountains. 4. The napellus, is a native of Switzerland, Bava- ria, and France. 5. The Pyrenaicum, is a native of Siberia, Tartary, and the Pyrenean mountains. See plate II. fig. 2. 6. The cammarum, and, 7. The anthora, are both natives of Taurus and the Pyre- ACQUA-CHE-TAVELLA, a celebrated fountain of nean mountains. The English name of the aconitum is wolfibane or monkshood. Each fpecies is highly a- crid, and extremely dangerous when taken into the ftomach, as it generally occafions convulfions, and fre- quently a mortification in that organ. ACONTIAS, in zoology, an obfolete name of the an- guis jaculos, or dart-fnake, belonging to the order of amphibia ferpentes. See ANGUIS. ACONTIA, is alfo a name applied by fome writers to a kind of comet or meteor, whofe head appears roundith or oblong, and its tail long and flender, like a dart or arrow ACONTIUM, in ancient writers, a kind of Grecian dart or javelin, fomewhat refembling the Roman pilum. ACOPA, in botany, an obfolete name of a fpecies of the trifolium, Ste TRIFOLIUM. Italy, in Calabria-citerior, a province of Naples. It is near the mouth of the river Crata, and the ruins commonly called Sibari rovinata. It has been faid to beautify thofe who washed in it. ACQUAPENDENTE, a pretty large town of Italy, in the territory of the church, and patrimony of St Peter, with a bishop's fee. It is feared on a mountain, near the river Paglia, 10 miles W. of Orvieto, and 57 N. by W. of Rome, 11. 53. E long. 42. 43. lat. ACQUARIA, a fmall town of Italy, in Frigana, a di- ftrict of Modena, which is remarkable for its medici- nal waters. It is 12 miles foath of the city of Mo- dena, 11. 17. E. long. 4. 24. lat. ACQUAVIVA, a fmall town in the Terra di Bari, a province in the kingdom of Naples, 17. 25. Elang 41. 10. lat ACQUEST,