Sizes.—Seldom small. Medium sizes are most common. Some runners and occasionally a saddle bag.
Prices.—$2.00 to $5.00 per square foot.
Remarks.—Durable and heavy. Resemble the Khorasan in most respects. Aiyin and Kayin are names sometimes given to a coarse form of Herat. Many of the Herats of the 16th and 17th centuries are now erroneously called Ispahans.
KHORASAN
Why So Named.—After the most northeastern province of Persia from which they come.
Knot.—Senna. Number vertically eight to fifteen; number horizontally ten to twenty-five; number to square inch eighty to three hundred seventy-five.
Warp.—Always white cotton.
Woof.—Usually cotton, occasionally wool.
Nap.—Fine wool of varying lengths.
Weave.—Characteristic, there being four or more rows of knots with no weft threads between, then several weft threads, etc., giving a peculiar look to the back of the rug and when it is bent the knots are shown in groups.