And the Effect of the Sun's Rays on Them By Dr. Wu Lien-teh, In view of the great heat now prevailing and the various kinds of headgear worn by people for protection, it has been thought advisable to conduct a few experiments to test the nature and extent of this protection. For this purpose, hats made of different materials and varying in shape were exposed to the direct sun's rays for certain lengths of time and the temperatures of the thermometers placed inside each hat noted. The date chosen was August 1, 1921, the hour 1 p.m., the place Harbin Hospital compound. There was a slight breeze blowing at the time, the thermometer marking 110 Fahrenheit in the sum and 92 F. in the shade.
The following table shows the results obtained Time No. exposed Variety of Hat Temperoture inside hat 1 Flat stiff straw hat (English pattern) rey Szechuen tine panama soft straw hat 3 Rough Shantung semirigid straw, cost 50c.
Rough Shantung semirigid straw, cost 20 m.
Ss 20 m.
Text read from the printed page and cleaned; old type leaves the occasional error.