evaporation would be troublesome. (32) H. W. B. writes : Can you give recipe for paste composition for positive and negative consult the index of papers in SCIENTIFIC AMERICAN Coat it with asphalt varnish or with enamel or plate it coke which is best for battery is the gas retort carbon cured at any coal gas works. It is a waste product. C. C) 1889 SCIENTIFIC AMERICAN INC, 1889-08-11

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evaporation would be troublesome. (32) H. W. B. writes : Can you give recipe for paste composition for positive and negative consult the index of papers in SCIENTIFIC AMERICAN Coat it with asphalt varnish or with enamel or plate it coke which is best for battery is the gas retort carbon cured at any coal gas works. It is a waste product. C. C) 1889 SCIENTIFIC AMERICAN INC, 1889-08-11

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