An old form for idiot (q. v.). IDES (Lat.). In Civil Law. A day in the month from which the computation of days was made. The divisions of months adopted among the Ro- mans were as follows: The calends occurred on the first day of every month, and were distinguished by adding the name of the month: as, callendis Januarii, the first of January. The nones occurred on the fifth of each month, with the exception of March, July, October, and May, in which months they occurred. on the seventh. The ides occurred always on the ninth day after the nones, thus divid- ing the month equally. In fact the ides would seem to have been the primal division, occurring in the middle of the month, nearly. Other days than the three designated were indicated by the number of days which would elapse before the next succeeding point of division. Thus, the second of April is the quarto nonas Aprilis; the second of March, the sexto nonas Martii; the eighth of March, octavius idus Martii; the eighth of April, sextus idus Aprilis; the sixteenth of March, decimus septimus calendis Aprilis. This system is still used in some chanceries in Europe; and we therefore give the following Table of the Calends, Nones, and Ides. Feb. 28, bissextile, 29 days. Prid. Idus. Jan., Aug. Dec., 31 days. March, May, July, Oct., 31 days. April, June, Bept. Nov., 30 days. 1 Calendis Calendis Calendis Calendis 4 Nonas 6 Nonas 4 Nonas 4 Nonas 8 Nonas 5 Nonas 8 Nonas 8 Nomas 4 Prid. Non. 4 Nonas Prid. Non. Prid. Non. 5 Nonis 3 Nonas Nonis Nonis 8 Idus Prid. Non. 8 Idus 8 Idus 7 Idus Nonis 7 Idus 7 Idus 6 Idus 8 Idus 6 Idus • Idus 5 Idus 7 Idus 5 Idus 5 Idus 4 Idus 6 Idus 4 Idus 4 Idus 8 Idus 5 Idus $ Idus 8 Idus 18 Prid. Idus 4 Idus Prid. Idus 13 Idibus 8 Idus Idibus Idibus 14 19 Cal. Prid. Idus. 18 Cal. 16 Cal. 15 18 Cal. Idibus 17 Cal. 15 Cal. 16 17 Cal 17 Cal. 16 Cal. 14 Cal. 17 16 Cal. 16 Cal. 15 Cal. 13 Cal. 18 15 Cal 15 Cal. 14 Cal. 18 Cal. 19 14 Cal. 14 Cal. 18 Cal. 11 Cal. 20 13 Cal. 18 Cal. 18 Cal. 10 Cal. 21 12 Cal. 12 Cal 11 Cal. 9 Cal. 22 11 Cal. 11 Cal. 10 Cal. 8 Cal. 23 10 Cal. 10 Cal. 9 Cal. 7 Cal. 9 Cal. 9 Cal. 8 Cal. 6 Cal. 1 8 Cal. 8 Cal. 7 Cal. 5 Cal. 7 Cal. 7 Cal. 6 Cal. 4 Cal. 6 Cal. 6 Cal. 5 Cal. 8 Cal. 5 Cal. 5 Cal. 4 Cal. Prid. Cal. 4 Cal. 4 Cal. 3 Cal. 8 Cal. 8 Cal. Prid. Cal. 31 Prid. Cal. Prid. Cal. If February is bissextile, Sexto Calendas (6 Cal.) is counted twice, viz., for the 24th and 5th of the month. Hence the word bissextile. IDIOCHIRA (from Gr. ίδιος, private, and χείρ, hand). In Civil Law. An in- strument privately executed, as distin- guished from one publicly executed. Vicat, Voc. Jur.