. HTm 10 IS 20 25 NUMBER OF CORPORA 40 Text-fig. 25. Smoothed curve showing increase in body length with increasing corpora number, together with frequency distributions of corpora numbers at progressive stages of epiphysial fusion. IOO >• o z Ul z> 50 O ui a. u. PHYSICALLY IMMATURE PHYSICALLY MATURE 10 15 20 25 30 35 NUMBER OF CORPORA 50 Text-fig. 26. Smoothed frequency distributions of corpora numbers in physically immature and physically mature females. mean is 14-0 with a standard deviation of 3-94. This is slightly lower than the value at the intersection point (14-3) and is influen


. HTm 10 IS 20 25 NUMBER OF CORPORA 40 Text-fig. 25. Smoothed curve showing increase in body length with increasing corpora number, together with frequency distributions of corpora numbers at progressive stages of epiphysial fusion. IOO >• o z Ul z> 50 O ui a. u. PHYSICALLY IMMATURE PHYSICALLY MATURE 10 15 20 25 30 35 NUMBER OF CORPORA 50 Text-fig. 26. Smoothed frequency distributions of corpora numbers in physically immature and physically mature females. mean is 14-0 with a standard deviation of 3-94. This is slightly lower than the value at the intersection point (14-3) and is influenced by the effect of mortality on the populations from which the sample is taken. The effect of mortality would be to steepen the right-hand part and to decrease the slope of the left-hand part (as in Text-fig. 27), so that the intersection point is a slightly better indication of the mean number of corpora on the attainment of physical maturity. A further confirmation of the close-


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