Oct., 1892.Nov., 1892.Dec., 1892.
1Cal.aSat.1Cal.dTues.1Cal.fThur.
26bSun.24eWed.24gFri.
35cMon.33fThur.33aSat.
44dTues.42gFri.42bSun.
53eWed.5Non.aSat.5Non.cMon.
62fThur.68bSun.68dTues.
7Non.gFri.77cMon.77eWed.
88aSat.86dTues.86fThur.
97bSun.95eWed.95gFri.
106cMon.104fThur.104aSat.
115dTues.113gFri.113bSun.
124eWed.122aSat.122cMon.
133fThur.13Ides.bSun.13Ides.dTues.
142gFri.1418cMon.1419eWed.
15Ides.aSat.1517dTues.1518fThur.
1617bSun.1616eWed.1617gFri.
1716cMon.1715fThur.1716aSat.
1815dTues.1814gFri.1815bSun.
1914eWed.1913aSat.1914cMon.
2013fThur.2012bSun.2013dTues.
2112gFri.2111cMon.2112eWed.
2211aSat.2210dTues.2211fThur.
2310bSun.239eWed.2310gFri.
249cMon.248fThur.249aSat.
258dTues.257gFri.258bSun.
267eWed.266aSat.267cMon.
276fThur.275bSun.276dTues.
285gFri.284cMon.285eWed.
294aSat.293dTues.294fThur.
303bSun.302eWed.303gFri.
312cMon. 312aSat.

January.February.March.
Cal. 1 Cal. 1 Cal. 1
6-4=26-4=28-6=2
6-3=36-3=38-5=3
6-2=46-2=48-4=4
Nones 5 Nones 58-3=5
14-8=614-8=68-2=6
14-7=714-7=7 Nones 7
14-6=814-6=816-8=8
14-5=914-5=916-7=9
14-4=1014-4=1016-6=10
14-3=1114-3=1116-5=11
14-2=1214-2=1216-4=12
Ides 13 Ides 1316-3=13
33-19=1430-16=1416-2=14
33-18=1530-15=15 Ides 15
33-17=1630-14=1633-17=16
33-16=1730-13=1733-16=17
33-15=1830-12=1833-15=18
33-14=1930-11=1933-14=19
33-13=2030-10=2033-13=20
33-12=2130-9=2133-12=21
33-11=2230-8=2233-11=22
33-10=2330-7=2333-10=23
33-9=2430-6=2433-9=24
33-8=2531-6=2533-8=25
33-7=2631-5=2633-7=26
33-6=2731-4=2733-6=27
33-5=2831-3=2833-5=28
33-4=2931-2=2933-4=29
33-3=30 33-3=30
33-2=31 33-2=31

PART SECOND.

MATHEMATICAL.

CHAPTER I.

ERRORS OF THE JULIAN CALENDAR.

It will be necessary in the first place to understand the difference between the Julian and Gregorian rule of intercalation. If the number of any year be exactly divisible by four it is leap year; if the remainder be 1, it is the first year after leap-year; if 2, the second; if 3, the third; thus: