SILK n.
ale flower of maize. Raw silk, silk as it is wound off from the cocoons, and before it is manufactured. -- Silk cotton, a cottony substance enveloping the seeds of the silk-cotton tree. -- Silk-cotton tree (Bot.), a name for several tropical trees of the genera Bombax and Eriodendron, and belonging to the order Bomba…
SLATE n.
ate, or Alum slate (Min.), a kind of slate containing sulphate of alumina, -- used in the manufacture of alum. -- Bituminous slate (Min.), a soft species of sectile clay slate, impregnated with bitumen. -- Hornblende slate (Min.), a slaty rock, consisting essentially of hornblende and feldspar, useful for flagging on…
SODA n.
accumulates as a useless residue or side product in the ordinary Leblanc process of soda manufacture; -- called also alkali waste. -- Soda water, originally, a beverage consisting of a weak solution of sodium bicarbonate, with some acid to cause effervescence; now, in common usage, a beverage consisting of water high…
SODIUM n.
um hydrate (milk of lime), on sodium carbonate. It is a strong alkali, and is used in the manufacture of soap, in making wood pulp for paper, etc. Called also sodium hydrate, and caustic soda. By extension, a solution of sodium hydroxide.
SULPHURIC a.
d other intractable substances, sets free most acids from their salts, and is used in the manufacture of hydrochloric and nitric acids, of soda, of bleaching powders, etc. It is also powerful dehydrating agent, having a strong affinity for water, and eating and corroding paper, wood, clothing, etc. It is thus used in t…
SWORD n.
t (Naut.), a mat closely woven of yarns; -- so called from a wooden implement used in its manufacture. -- Sword shrimp (Zoöl.), a European shrimp (Pasiphæa sivado) having a very thin, compressed body. -- Sword stick, a sword cane. -- To measure swords with one. See under Measure, v. t. -- To put to the sword. See u…
THALLIUM n.
p found in some minerals, as certain pyrites, and also in the lead-chamber deposit in the manufacture of sulphuric acid. It is isolated as a heavy, soft, bluish white metal, easily oxidized in moist air, but preserved by keeping under water. Symbol Tl. Atomic weight 203.7.