amp; Girders THE UNION IRON MILLS, Pittsburgh, Pa.-The attention of Engineers and Architects Is calledto onr Improved Wrought-Iron Beams and Girders (pat-ented), In which the con-pound welds between the stemand flanges.which have proved so objectionable In the oldmode of manufacturlng,are entirely… … Science Record Isa splendid book of 600pag-es, published an-nually, about tbe 15tbof January, niustia-ted with many engra-vings. Price $2.50. Thi Volume for 1876will be published aboutJanuary 15tb. Its con-tents will embrace themost Interesting Factsand Discoveries in tbevarious Arts and Sci-ences…
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