3° 4Section III.D. C. Gini.
TABLE VII.
Marriages and births according to months in Luxemburg, 1901-1903.*
Daily mean of births for each month, after making the daily mean of births for
the whole year = 1,000.
Month of BirthMarriageFFirst-born ¡$r~f-3te Births tj) c'$■ to
-2 £
0 .s
h pqIllegitimate BirthsIllegitimate and legitimate births, excluding legitimate first-bornMonth of
Marriage
1234567
January ...........I3I4102499810591000April
February ...........120211971108I2ÇOH17May
March...................820XI73ioçi12451099June April ...................6999091068IIÇI1073July
May ...................716985107512321083August
June ...................935893974903971September
July ..........................870864943781935October
August ...........¿258996934781927November
September772915936931936December
October1412895967768958January
November ... '...17151210983903979February
December ...........367955932940932March
* Data taken from Mouvement de la population dans les Grand Duché pendant Vannée, 1903.
See pages 123, 124, 125, 132.
well be that this assertion is well founded for one State and incorrect for
another. The decisive proof of its truth or falsity for a given country, may
be established by comparing the frequency of marriages in each month
with the frequency of conceptions, considering the legitimate first
born and the other births separately. We may make this comparison
in the case of Luxemburg (see Table VII). The monthly frequency
of first-born (see Col. 3) differs markedly from that of the other
legitimate births (see Col. 4) and the total births (see Col. 6). Now these
differences appeared to be due to the influence of marriages of nine or ten
months before. In fact, when the marriages of nine or ten months before
shew a frequency greater than the yearly mean, the frequency of first-born is
relatively higher than that of other births ; the contrary happens in the opposite
case. Between the frequency of first born in a certain month and that of marriages
nine or ten months before we find an undoubted parallelism which would probably
be even more marked if we were in a position to consider fortnightly rather
than monthly periods.
