teacher for.......... 103 Liebreich, construction of desks on spinal curvature... for boating-men......... ....... 103 Life, duration of............... 117 142 67, 77 74 142, 144 Light, defective, causes stooping 69 32, 62, 139 artificial.... Hammer-palsy 128 in private house...... near-sight......... 50 Hatters.... 113 9 124 123 32 MAINE ventilation Horseback exercise sometimes Maps....... schools.. Heart-disease in miners......... See Windows, Shades. Ling's system of gymnastics..... ..... Lot, size of, for school.... 81 82 83 83 83 98 4I 58 94, 95 22 107, 110 92 .... 56, 57 Masks to protect from dust........ 118 port on average age at death.. 144 106 State Board of Health on Meals, interval between study 20 21 intervals between............... .. 139 Medical inspection of schools, Mental application, excess de- characteristics of children... See Study. 28 7 15 Mercury, effect on hatters......... 113 mirror-makers............ 113 |