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P. BLAKISTON, SON & CO., 1012 WALNUT STREET,

PHILADELPHIA.

FOR

SANITARY AND TECHNICAL PURPOSES.

CORRECTIONS.

Page 33, line 15, omit first word “to.”

54, 13 from bottom, for “ carbolate read “carbonate.
56, 8

potassium” read “ platinum."
74,

“nitrites” read “ nitrates,

9

66

66

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II

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PHILADELPHIA :
P. BLAKISTON, SON & CO.,

IOI 2 WALNUT STREET.

1889.

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