# Talk:Book - Manual of Human Embryology 8

## Table 1

++++++++++++++++++++++++++ Married women . . . Unmarried women

On last day of menstrua tloD.

Percent. 35.55 25.49

First twelve days after beginning of menstruation.

Percent. 88.44 70.98

First seven days after end of menstruation.

Per cent. 88.88 70.58

Similar figures are given by Issmer.

Time of copulation.

First week of menstrual period . . Second week of menstrual period Third week of menstrual period. Fourth week of menstrual period

Average duration of pregnancy.

277 days 279 days 287 days 285 adys

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## Table 2

according to Bischoff the growth of the dog's ovum is as follows :

Diameter of ovum in mm. 0.15 0.14 0.14 0.16 0.16 0.18 0.20 0.21 Age in days 1 2 3 4 5 6 7 8 Diameter of ovum in mm. 0.28 0.30 1.0 2.0 3.0 4.0 5.0 5.0 6.0 Age in days 9 10 11 12 13 14 15 16 16.5 Twelve days after copulation are required before the ovum is as large as Peters 's and thirteen days before it is as large as Merttens's. When it is recg^lled that Merttens's ovum was scraped out of the uterus twenty-one days after the beginning of the last period we are inclined to believe that sixteen to twenty-one days represents its true age. Peters 's ovum, on the other hand, must be over ^Three or four days old"; fifteen is much more nearly its correct age.

 Age in days Diameter of ovum in mm 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 16.5 0.15 0.14 0.14 0.16 0.16 0.18 0.2 0.21 0.28 0.3 1 2 3 4 5 5 6

## Table 3

Issmer gives the following figures:

Size of child

No. of cases.

Age in days, from the beginning of the last

in cm.

menstrual period.

48

203

271

49

272

278

60

252

277

51

211

282

62

123

283

63

34

286

54

18

290

## Table 4

Together there are over 1000 measurements, of which over 500 have data relating to the age. Fully half of both these are from my own collection.

Days between

the beginning

Only possible time of

Length of embryo

of the last

copulation between the last

Author.

in mm.

menstruation

menstruation and the

and the

abortion.

abortion.

Embryo anlage, 0.15

38

Exactly 16 dnys

Bryce-Teacher's monograph, 1908.

Ovum, 6.6X3.3

42

20 days before and earlier

Reichert.

Embryo anlage, 1.3 .

34

Exactly 21 days

fetemod : Anat. Anz., vol. XV, 1899.

Embryo, 3.2

48

40 days before and later

His : A. M. E. II.

Embryo, 6

60

38 days before and later 39 and 41 days before 45 days and later

Kollmann's Atlas.

Embryo. 7

49 57

No. 208.

Embryo, 7}

His.

Embryo, 8.8

42

Exactly 38 days

Tandler : Anat. Anz., vol. xxxi, 1907.

Embryo, 10

60

49 days and earlier

His.

Embryo, 11

65

31 days (?)

Rabl : Entwickl. d. Gesch.

Embryo, 13.6

63

53 days and later

His.

Embryo, 14

65

Exactly 47 days

Rabl.

Embryo, 30

75

Exactly 56 days

No. 26.

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