From Simple English Wikipedia, the free encyclopedia
1267
(
MCCLXVII
)
was a
common year starting on Saturday
of the
Julian calendar
, the 1267th year of the
Common Era
(CE) and
Anno Domini
(AD) designations, the 267th year of the
2nd millennium
, the 67th year of the
13th century
, and the 8th year of the
1260s
decade. As of the start of 1267, the Gregorian calendar was
7 days ahead of the Julian calendar, which was the dominant calendar of the time.
- Roger Bacon
completes his work
Opus Majus
and sends it to
Pope Clement IV
, who had requested it be written; the work contains wide-ranging discussion of
mathematics
,
optics
,
alchemy
,
astronomy
,
astrology
, and other topics, and includes what some believe to be the first description of a
magnifying glass
. Bacon also completes
Opus Minus
, a summary of
Opus Majus
, later in the same year. The only source for his date of birth is his statement in the
Opus Tertium
, written in 1267, that
"forty years have passed since I first learned the alphabet"
. The 1214 birth date assumes he was not being literal, and meant 40 years had passed since he matriculated at
Oxford
at the age of 13. If he had been literal, his birth date was more likely to have been around 1220.
- The leadership of
Vienna
forces
Jews
to wear
Pileum cornutum
,a cone-shaped head dress, in addition to the
yellow badges
Jews are already forced to wear.
- In England, the
Statute of Marlborough
is passed, the oldest English law still (partially) in force.
