Heat of the electric arc

✍ Scribed by C.

• Publisher: Elsevier Science
• Year: 1880
• Tongue: English
• Weight: 61 KB
• Volume: 109
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/0016-0032(80)90485-8

✦ Synopsis

Gum Arabic

Solution.--The adhesiveness and durabill V of u solution of 100 parts gum arable in 250 parts water may be increased by adding 2 parts of sulphate of alumina.--Polytech. Notlzbl.

C.

Artificial Quartz Crystals.--M~l. Friedel and Sarrazim have obtained quartz crystals by the aetlon of hydrochloric acid upon gelatinous silica in elosed vessels, at a temperature of 350 ° (662°F.). -S'oc. Chim. de Pclris.

C.