. J F M J J A MONTHS Text-fig. 37. Monthly frequencies of conception for different classes of pregnant females. P,, first pregnancy diagnosed from mammary glands; o, 1, 2 and 0-1, number of corpora albicantia. The mean conception dates ± 2 are indicated. There are conspicuous differences in the timing of the pregnancy of primiparous females compared with multiparous females. In Text-fig. 36 the mean monthly foetal lengths for all pregnant females and for females known to be primiparous, from examination of the mammary glands, are set out for comparison. The rates of growth of both groups
. J F M J J A MONTHS Text-fig. 37. Monthly frequencies of conception for different classes of pregnant females. P,, first pregnancy diagnosed from mammary glands; o, 1, 2 and 0-1, number of corpora albicantia. The mean conception dates ± 2 are indicated. There are conspicuous differences in the timing of the pregnancy of primiparous females compared with multiparous females. In Text-fig. 36 the mean monthly foetal lengths for all pregnant females and for females known to be primiparous, from examination of the mammary glands, are set out for comparison. The rates of growth of both groups of foetuses appear to be similar, but the first-pregnancy 'oetuses seem to be retarded by about a month compared with those of multiparous females.
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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti