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IN what is known as a “professional paper,” Mr. W. H. Waggaman, of the U.S. Department of Agriculture, has recently given an account of the modes of manufacture of sulphuric acid, both by the “chamber ...

WE heartily welcome Prof. Lunge's volume on the manufacture of sulphuric acid. It is the result of a rare combination of thorough knowledge of scientific theory with that intimate experience of the ...