Chapter V: MEDICINE AND HYGIENE.--The Science of Easy Chairs. The muscular

conditions of fatigue, and how to obtain the greatest rest. How
easy chairs should be made.

Prof. Huxley on the Hand. Abstract of his inaugural lecture before
the South London Workingmen's College.

Paint from a Sanitary Point of View. The required abolition of
absorbent surfaces in dwellings. Lead poisoning from paint not
thoroughly dry. Cases described in which white lead paint in
dwellings never dries, but gives off poisonous particles, which
are inhaled by the inmates, causing depression, weakness headache,
and loss of appetite. Zinc recommended in paint to avoid lead
poisoning, and the new oxy-sulphide of Zinc described, with
covering qualities equal to white lead.

The Purification of Sewage. By HENRY ROBINSON, F.R.S. Paper
read before the Sanitary Institute of Great Britain. Progress
in purifying sewage by precipitation. The use of chemicals for
precipitating, deodorizing, and disinfecting. Practical data on
a large scale, with cost. Average number of gallons per head of
population, etc., of the successful system now in operation at
Coventry and Hertford. How the water is removed from the sludge by
filter presses. Drying and removal of the sludge. Theoretical and
actual values of the sludge for fertilizing.