SUMMARY OF PART ONE
IN this chapter we summarize some of the outstanding findings of Part One; in addition, we compare certain of these phenomena and their variations with other occurrences.
We have noted that the trend in the birth-rate, stillbirth-rate, and the death-rate has been downward. We found that for the birth-rate, the decline in trend for the period 1900 through 1921 was 8.66 per cent. During the same period, the stillbirth-rate declined 9.54 per cent; for the death-rate the decline registered during that span of years was 36.51 per cent. We found, further, that these long-time tendencies were not unique either to Boston, to Massachusetts, or to the United States; they are well-nigh universal phenomena. When we turned to marriages and divorces, we found that the trend was decidedly upward. For the period 1900 through 1920, the trend in marriages increased 41.02 per cent; for divorces filed the trend increased 118.54 per cent. We found, further, that the population had increased during those same years 33.37 per cent. This means that, compared with the population, marriages and divorces have increased faster than the population; marriages increased 22.92 per cent more rapidly than the population: the number of divorces filed increased 3.39 times as fast as did the population. We found, further, that divorces increased about 2.75 times as fast as did marriages.