Schoenus ( la, schœnus; grc-gre, σχοίνος, ''schoinos'', " rush rope"; egy,

i͗ Yodh (also spelled jodh, yod, or jod) is the tenth letter of the Semitic abjads, including Phoenician Yōd /𐤉, Hebrew Yōd , Aramaic Yod , Syriac Yōḏ ܝ, and Arabic . Its sound value is in all languages for which it is used; in many la ...

trw, "river-measure") was an ancient Egyptian,

Greek Greek may refer to: Greece Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group. *Greek language, a branch of the Indo-European language family. **Proto-Greek language, the assumed last common ancestor ...

and Roman unit of

length Length is a measure of distance. In the International System of Quantities, length is a quantity with dimension distance. In most systems of measurement a base unit for length is chosen, from which all other units are derived. In the Inte ...

and

area Area is the quantity that expresses the extent of a region on the plane or on a curved surface. The area of a plane region or ''plane area'' refers to the area of a shape or planar lamina, while '' surface area'' refers to the area of an op ...

based on the knotted cords first used in Egyptian

surveying Surveying or land surveying is the technique, profession, art, and science of determining the terrestrial two-dimensional or three-dimensional positions of points and the distances and angles between them. A land surveying professional is ...

Length

The

Greeks The Greeks or Hellenes (; el, Έλληνες, ''Éllines'' ) are an ethnic group and nation indigenous to the Eastern Mediterranean and the Black Sea regions, namely Greece, Cyprus, Albania, Italy, Turkey, Egypt, and, to a lesser extent, ot ...

, who adopted it from the

Egyptians Egyptians ( arz, المَصرِيُون, translit=al-Maṣriyyūn, ; arz, المَصرِيِين, translit=al-Maṣriyyīn, ; cop, ⲣⲉⲙⲛ̀ⲭⲏⲙⲓ, remenkhēmi) are an ethnic group native to the Nile, Nile Valley in Egypt. Egyptian ...

, generally considered the schoinos equal to 40 stades, but neither the schoinos nor the stadion had an absolute value, and there were several regional variants of each.

Strabo Strabo''Strabo'' (meaning "squinty", as in strabismus) was a term employed by the Romans for anyone whose eyes were distorted or deformed. The father of Pompey was called " Pompeius Strabo". A native of Sicily so clear-sighted that he could s ...

noted that it also varied with terrain, and that when he "ascended the hills, the measures of these schoeni were not everywhere uniform, so that the same number sometimes designated a greater, sometimes a less actual extent of road, a variation which dates from the earliest time and exists in our days."

Herodotus Herodotus ( ; grc, , }; BC) was an ancient Greek historian and geographer from the Greek city of Halicarnassus, part of the Persian Empire (now Bodrum, Turkey) and a later citizen of Thurii in modern Calabria (Italy). He is known fo ...

2.6
an

says, that schoenus is 60 stadia or about . This agrees with the distance implied by the Triacontaschoenus stretching south of the First Cataract in Roman-era

Nubia Nubia () ( Nobiin: Nobīn, ) is a region along the Nile river encompassing the area between the first cataract of the Nile (just south of Aswan in southern Egypt) and the confluence of the Blue and White Niles (in Khartoum in central Sud ...

Pliny the Elder Gaius Plinius Secundus (AD 23/2479), called Pliny the Elder (), was a Roman author, naturalist and natural philosopher, and naval and army commander of the early Roman Empire, and a friend of the emperor Vespasian. He wrote the encyclopedic ' ...

br>5.11
that is 30 stadia. Strabo

according to the place, between 30 and 120 stadia.

Isidore of Charax Isidore of Charax (; grc, Ἰσίδωρος ὁ Χαρακηνός, ''Isídōros o Charakēnós''; la, Isidorus Characenus) was a Greco-Roman geographer of the 1st century BC and 1st century AD, a citizen of the Parthian Empire, about whom nothi ...

's schoenus—used in his '' Parthian Stations''—has been given values between 4.7 and 5.5 kilometers, but the precise value remains controversial given the known errors in some of his distances. The Byzantine schoinion or "little schoenus" (, ''skhoinion'') was or 33⅓ stades.

Area

The Romans also used the schoenus as a unit of area, equivalent to the ''actus quadratus'' or half-

jugerum The jugerum or juger ( la, iūgerum, ', ', or ') was a Roman unit of area, equivalent to a rectangle 240 Roman feet in length and 120 feet in width (about 71×35½m), i.e. 28,800 square Roman feet ( la, pedes quadratum) or about hectare (0.62 ...

(2523 m²) formed by a square with sides of 120

Roman feet The ancient Roman units of measurement were primarily founded on the Hellenic system, which in turn was influenced by the Egyptian system and the Mesopotamian system. The Roman units were comparatively consistent and well documented. Length T ...

. The Heraclean Tables admonished that each schoenus should be planted with 4 olive trees and some

grape vine ''Vitis'' (grapevine) is a genus of 79 accepted species of vining plants in the flowering plant family Vitaceae. The genus is made up of species predominantly from the Northern Hemisphere. It is economically important as the source of grapes, ...

s, upon penalty of fines.

References

Obsolete units of measurement Units of length Ancient Greek units of measurement {{Measurement-stub

Length

Area

See also

References