The New Encyclopaedia Britannica
Encyclopaedia Britannica, 1974 - Encyclopedias and dictionaries - 934 pages
 Propaedia: outline of knowledge and guide to the Britannica.--- Micropaedia: ready reference and index.--- Macropaedia: knowledge in depth.
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The deficiency was remedied by isomer- ization (changing molecular structure) of
the more abundant normal butane into isobutane. The isomerization catalyst is
aluminum chloride supported on alumina, promoted by hydrogen chloride gas.
Diethyl methyl-«-propylmalo- mepro- nate is reduced with lithium aluminum
hydride, LiAlH4, bamate to the corresponding dihydric primary alcohol; this is
condensed with carbonyl chloride, COC12, with elimination of hydrogen chloride
to give ...
Sulfur bacteria, which use hydrogen sulfide as a source of hydrogen atoms
instead of water, produce sulfur instead of oxygen during photosynthesis. In the
1930s, a Dutch biologist, Cornelis van Niel, recognized that the utilization of
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This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review