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I now have a good, if vague, answer to the question, "Geez, Maribou, just how many books do you have anyway?" Between 1500 and 2000. I got to 1432, and stopped counting. Still haven't counted the books in the 4 full boxes of unread books. Didn't bother to count the ones that are already destined to go elsewhere. If I use the above estimate, I can be sure I'm right for a good long time. Unless, of course, I actually get around to weeding. Which might happen.
I have books! Wonderful wonderful books!
(In an unrelated occurrence, I was going through boxes my love packed years ago, before we were married, and found a bright blue rock I'd thought lost forever. Turns out I lost it in his room at some point, and it got packed. Of course, I promptly lost it again, but I know it's in one of two places, so that's good enough. I like to let my objects wander.)

i'm so proud!

Date: 2002-12-22 08:44 pm (UTC)
From: [identity profile] raisinbottom.livejournal.com
Mercury is the only common metal liquid at ordinary temperatures. Mercury is sometimes called quicksilver. It rarely occurs free in nature and is found mainly in cinnabar ore (HgS) in Spain and Italy. It is a heavy, silvery-white liquid metal. It is a rather poor conductor of heat as compared with other metals but is a fair conductor of electricity. It alloys easily with many metals, such as gold, silver, and tin. These alloys are called amalgams. Its ease in amalgamating with gold is made use of in the recovery of gold from its ores.

The most important salts are mercuric chloride HgC12 (corrosive sublimate - a violent poison), mercurous chloride Hg2Cl2 (calomel, occasionally still used in medicine), mercury fulminate (Hg(ONC)2, a detonator used in explosives), and mercuric sulphide (HgS, vermillion, a high-grade paint pigment).

Organic mercury compounds are important - and dangerous. Methyl mercury is a lethal pollutant found in rivers and lakes. The main source of pollution is industrial wastes settling to the river and lake bottoms.

As mercury is a very volatile element, dangerous levels are readily attained in air. Mercury vapour should not exceed 0.1 mg m-3 in air. Air saturated with the vapour at 20°C contains mercury in a concentration far greater than that limit. The danger increases at higher temperatures. It is therefore important that mercury be handled with care. Containers of mercury should be securely covered and spillage should be avoided. Mercury should only be handled under in a well- ventilated area. If you are in possession of any mercury you are advised to contact a properly qualified chemist or public health laboratory for its safe disposal.

Small amounts of mercury spillage can be cleaned up by addition of sulphur powder. The resulting mixture should be disposed of carefully.

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