On the handicapping of the first-born : being a lecture delivered at the Galton laboratory, University College, London, March 17, 1914 / by Karl Pearson.

  • Karl Pearson
Date:
1914
Catalogue details

Licence: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

Credit: On the handicapping of the first-born : being a lecture delivered at the Galton laboratory, University College, London, March 17, 1914 / by Karl Pearson. Source: Wellcome Collection.

    66/78 (page 60)
    number of first-borns at either 165 or 150. It must also be borne in mind that the differential death-rate, if it applied especially to the class of family commented on in the last paragraph of p. 4, would not only lower the permille of first-borns in column I, but column II might be produced from column III (see Table VII) without the counter balancing influence of the bias towards smaller families (see Table IX), which in this case would be excluded. TABLE XLIII. PERMILLES OF EACH BIRTH ORDER IN THE CASE OF THE TUBERCULOUS. KELLING SANATORIUM. 1 1 Order of Birth. Phthisical Members. I. Sibships of Phthisical {Pearson'). II. Scottish Industrial Class. III. Scottish Agricultural Class. IV. Yule-G reenwood Reconstruction. V. I 205 I 43 165 150 J 95 2 183 140 I 59 146 170 3 137 134 148 J38 !5 2 4 112 123 133 128 126 5 106 IO9 114 H5 IOI 6 9i 94 94 97 80 7 49 77 72 78 60 8 4 1 60 50 59 44 9 3 2 47 32 39 32 10 22 3o 18 24 W T T *3 17 9 14 10 ] 2 5 9 4 7 4 '3 1 6 I 3 3 1 4 2 5 1 2 J 5 3 ) I 16 1 2 1 1 ) 17 and over J I > J > 1 Mean Size of Family 6-98 6'05 6-64 5 -I 3 I have printed these data because, although their method of collection seems to me unsuited to our present purpose, it still in my opinion shows evidence of the handicapping of the first- and second-born members in the case of tuberculosis. (14) Congenital Cataract. I am able to give results for fifty families with congenital cataract from pedigrees in my possession. The material is not very ample, but it is sufficient to suggest that this disease, which is markedly hereditary in character, has a bias against the two elder-born. This table was formed by the same method as that for Congenital Cataract : see p. 61. 1