3.  The burials in Dublin for the said six years were 9,865, the sixth part or medium whereof is 1,644, which is about the twelfth part of the London burials, and about a fifth part over.  So as the people of London do hereby seem to be above twelve times as many as those of Dublin.

4.  The births in the same time at Dublin are 6,157, the sixth part or medium whereof is 1,026, which is also about five-eighth parts of the 1,644 burials, which shows that the proportion between burials and births are alike at London and Dublin, and that the accounts are kept alike, and consequently are likely to be true, there being no confederacy for that purpose; which, if they be true, we then say —

5.  That the births are the best way (till the accounts of the people shall be purposely taken) whereby to judge of the increase and decrease of people, that of burials being subject to more contingencies and variety of causes.

6.  If births be as yet the measure of the people, and that the births (as has been shown) are as five to eight, then eight-fifths of the births is the number of the burials, where the year was not considerable for extraordinary sickness or salubrity, and is the rule whereby to measure the same.  As for example, the medium of births in Dublin was 1,026, the eight-fifths whereof is 1,641, but the real burials were 1,644; so as in the said years they differed little from the 1,641, which was the standard of health, and consequently the years 1680, 1674, and 1668 were sickly years, more or less, as they exceeded the said number, 1,641; and the rest were healthful years, more or less, as they fell short of the same number.  But the city was more or less populous, as the births differed from the number 1,026, viz., populous in the years 1680, 1679, 1678, and 1668, for other causes of this difference in births are very occult and uncertain.

7.  What hath been said of Dublin, serves also for London.

8.  It hath already been observed by the London bills that there are more males than females.  It is to be further noted, that in these six London bills, also, there is not one instance either in the births or burials to the contrary.

9.  It hath been formerly observed that in the years wherein most die fewest are born, and vice versa.  The same may be further observed in males and females, viz., when fewest males are born then most die:  for here the males died as twelve to eleven, which is above the mean proportion of fourteen to thirteen, but were born but as nineteen to eighteen, which is below the same.

Observations upon the Table B.

1.  From the Table B it appears that the medium of the fifteen years’ burials (being 24,199) is 1,613, whereas the medium of the other six years in the Table A was 1,644, and that the medium of the fifteen years’ births (being in all 14,765) is 984, whereas the medium of the said other six years was 1,026.  That is to say, there were both fewer births and burials in these fifteen years than in the other six years, which is a probable sign that at a medium there were fewer people also.