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Economical engineering in the St. Gotthard Tunnel

โœ Scribed by C.

Publisher
Elsevier Science
Year
1880
Tongue
English
Weight
56 KB
Volume
109
Category
Article
ISSN
0016-0032

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โœฆ Synopsis

Bone Glass.--Afier extracting phosphorus from bones, a glass can be fi)rmed fi'om the residue, which consists of lime and.phosphoric acid ; the ordinary'kinds of/lass being composed of sand and potash, soda, lime and alumina. Bone ~'lass ran be worked as readily as any other/l'~ss. It /ms the vahmble proper D" of not being attacked bv fluoric aeid.--Les Momle,~'.

C.

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