治Chronology

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500580600670700800900100010801100120015401600170018001900 520–579620–669910–9991010–10791290–1539

1

1

2

1

1

1

1

1

1

3

3

1

1

1

1

2

1

1

1

2

1

1

1

1

1

1

9 +3

1

2

2

5

20 +14

3

1

54 +48

7 +1

1

19 +13

56 +50

8 +2

24 +18

82 +76

51 +45

50 +44

73 +67

14 +8

18 +12

42 +36

4

11 +5

43 +37

45 +39

59 +53

2

No year recorded 818

+812

Each crop stands at the decade of the first year its book's date gives; a date given only as before a year stands at that year. Dates come from the catalogues and editions cited with each record. The bars draw the whole span and their counts to scale; in the strip below them, fifty years or more with no crop are folded and marked. Japanese dates converted with HuTime ↗