Silverlock's medical and surgical emergency reference book.

Date:
[1885?]
Catalogue details

Licence: Public Domain Mark

Credit: Silverlock's medical and surgical emergency reference book. Source: Wellcome Collection.

    8/134 (page 6)
    TABLE FOR CALCULATING THE DURATION OF PREGNANCY. (After SOHULTZE.) Reckon three months back from the last Jay of menstruation, and add to this date the number standing below the name of that month. Thus:—Last Menstruation .. . . Feb. 30th. Same day three months back .. .. Nov. 10th. Nov. 10th + 7 .. Nov. 17th. Or in Leap Year, Nov. 10 + 6 .. .. Nov. 16th.