Scientific American Volume 20 Number 03 (January 1869) . ise to very peculiar methods of manufacture, whiekin the skill and taste required for their performance and; of their product are unexcelled by any other departmentof industry. : The chief seat of the glass manufacture in the United Statesis Pittsburgh, which contains in the city proper and its imme-diate* vicinity sixty-eight glassworks, making over half theglass consumed in the country. In a subsequent article weshall take ourTeaders through some of these busy hives, andshow them by what unique means and adroit operations so
Scientific American Volume 20 Number 03 (January 1869) . ise to very peculiar methods of manufacture, whiekin the skill and taste required for their performance and; of their product are unexcelled by any other departmentof industry. : The chief seat of the glass manufacture in the United Statesis Pittsburgh, which contains in the city proper and its imme-diate* vicinity sixty-eight glassworks, making over half theglass consumed in the country. In a subsequent article weshall take ourTeaders through some of these busy hives, andshow them by what unique means and adroit operations someof the beautiful glass articles in common use are formed. posed to the action of an oxhydrogen flame, has never beforebeen discovered, nor has its property of being capable of ag-glomeration and molding, either separately or mixed with asmall portion of an agglutinant substance.—Chemical News. I «* — Stick and Umbrella Stand. We herewith reproduce from the Workshop, published byE. Steiger, 17 North William street, New York, the annexed. 3 1 1 \\ 10II 1 i • . 1 I1 I 11 1 1 STICK AND UMBRELLA STAND. The Zirctonfa Light. Messrs. Tessie du Motay & Co. have patented aujnventionfor improvements in preparing zirconia, and the <yment of the same to develop the light of oxyhydrogen . .\ Thespecification is as follows : Zirconia, or oxide of zirconium^in whatever manner it may be extracted from its ores, caj iagglomerated by compression ; for example, into sticks, dicylinders, or other forms suitable for being exposed to theflame of mixtures of oxygen and hydrogen without undergo-ing fusion or other alteration. Of all the known terrous ox-ides it is the only one which remains entirely unaltered whensubmitted to the action of a blowpipe fed by oxygen and hy-drogen, or mixtures of oxygen with gaseous or liquid carbon-ated hydrogens. Zirconia is also, of all the terrous oxides*that which, when introduced into an oxhydrogen flame, devel-ops the most intense and the most fixed lig
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectcarb, booksubjectiron
