x . [Entered at the Post Office of New York, N. Y., as Second Class Matter.] AN WEEK LY JOURNAL OF PRACTICAL INFORMATION, ART, SCIENCE, MECHANICS, CHEMISTRY AND MANUFACTURES, Vol. XLEL—No. $7 NEW YORK, FEBRUARY 21, 1880. $2.20 per Annum, [NEW SERIEs.] … HH ee! | j ji fall | LAL pt : r TAA AUN |e ! aay mM} N\| fi i) x eee : | 4 | IMARIRCHTA Wa \ i Mt il (il : Il! RS [ — A) SS Sa ‘ —=— \ v =e x TL i \ = ~ i) A i= —= won ai SN =F Seren ———- | \Wale 2 \ nl it i a ———— —/ \ EEE: naa os Sel -_ - \\\ \ RES WOON, — : ZB Ask THE MANUFACTURE OF SOLID EMERY…
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