oes to Reader.—When you finish reading 
this magazine, place a 1 cent stamp on this notice, 
mail the magazine, andit will be placed in the 
hands of our soldiers or sailors destined to pro« 
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S. Burleson, Postmaster-General. 
SCIENCE 
New SERixs BINGLE CoPIEs, 15 Ors. 
Vou, XLVIII No, 1244 Fripay, NoVEMBER 1, 1918 AYNUAL BSUBSORIPTION, $5.00 
S\ 
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“NEW (2d) EDITION 
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