The honey-guide is a South African cuckoo of the genusIndicator, which by its cries and motions directs people to the nests of wild honey bees. Research Honey-guide
James Henry Leigh Hunt was an English poet and essayist. He was born in 1784 and died in 1859. He was educated at ChristchurchHospital, where he attained some distinction, entered the office of his brother, an attorney, and afterwards obtained a situation in the war office. In 1808, in conjunction with his brother John, he started the Examinernewspaper, which soon became prominent for the fearlessness with which public matters were discussed. Before long official resentment took shape in two prosecutions of the brothers, the second of which, occasioned by an article in the paper of the 22nd of March, 1812, reflecting on the character of the prince regent, resulted in the brothers being sentenced to pay a fine of 500 pounds sterling each, and to suffer two years' imprisonment. During his confinement James Hunt wrote several works, amongst which are the Feast of the Poets, the Descent of Liberty, and the Story of Rimini.
In 1818 appeared Foliage, a collection of original poems and translations from Homer, Theocritus, Bion, etc; and in 1819 the Indicator was started, a weekly journal on the model of the Spectator, which contained some of his best essays. In 1822 he went to Italy, having received an invitation from Byron and Shelley, and, in conjunction with the former, carried on a newspaper called the Liberal; but it proved unsuccessful.
On his return to England James Hunt published Recollections of LordByron and some of his Contemporaries (published in two volumes in 1828), which provoked somewhat the indignation of the noble poet's friends. Among his subsequent works may be mentioned, A legend of Florence, a play represented with some success at Covent Garden in 1840; Stories from the Italian Poets (published in two volumes in 1846); Men, Women, and Books (published in 1847); A Jar of Honey from Mount Hybia (published in 1847); the Town, its Memorable Characters and Events (published in 1848); Autobiography (published in three volumes in 1850); Table Talk (published in 1850).
A bicarbonate indicator is a PHindicator sensitive enough to show a colour change as the concentration of the gas carbon dioxide increases. The indicator is used in photosynthesis and respiration experiments to find out whether carbon dioxide is being liberated. The initial red colour changes to yellow as the pH becomes more acidic. Carbon dioxide, even in the concentrations found in exhaled air, will dissolve in the indicator to form a weak solution of carbonic acid, which will lower the pH and therefore give the characteristic colour change. Research Bicarbonate Indicator
Gentian violet is a greenish crystalline substance, obtained from rosaniline, that forms a violet solution in water, and is used as an indicator, antiseptic, and in the treatment of burns. Research Gentian Violet
Phenolphthalein is a derivative of triphenyl-methane, formed when phthalic acid is heated with phenol in the presence of a dehydrating agent. It is a pale yellow solid that is soluble in alcohol, and forms bright red compounds with alkalis, that are decomposed by the weaker acids - even carbon dioxide. On account of this it is used as an indicator in acidimetry. Research Phenolphthalein
Rosolic acid, methyl-aurine, is a derivative of triphenyl-methane, corresponding to rosaniline, but with the amido groups of that compound replaced by hydroxyl groups. It is used as an indicator in acidimetry and sometimes as a dye. Research Rosolic Acid
Universal Indicator Paper is a special test paper used for testing the pH of a solution, very similar to litmus paper. Upon contact with a liquid, the Universal Indicator Paper changes colour, the resultant colour being compared with a chart to indicate the pH value of the liquid under test, ranging from a pH of 1 (very acid) through to 11 (very alkaline) the colour eanging from a deep marron red through orrange, pale yellow, olive green, lime green (neutral pH 7) through turqioise (slightly alkali) to a deep dark blue (pH 11 very alkali). Research Universal Indicator Paper
Erythrite is a secondary mineral which often shows a vivid colour and occurs in thin crusts. It is an important indicator of cobalt mineral deposits, being formed through the oxidation of cobaltite in veins and has the formulae Co3(AsO4)2ù8H2O and a relative hardness of 3. Research Erythrite
The Hughes 500M (Little Bird) is an American army small tactical helicopter flown by units of the 160th Special Operations Aviation Regiment. It can cruise at speeds of 160 mph and is a derivation of the older Hughes Model 369 'Cayuse'. Among the weapons it can carry is the TOW missile and the aircraft can be equipped with two weapon pods on each side of the fuselage plus a telescopic nose sight for the gunner and a steering indicator for the pilot. A 30 mm chain gun can be fired at rates of up to 750 rounds per minute. Research Hughes 500M
The Probert Encyclopaedia was designed, edited and programed by
Matt and Leela Probert
Abbreviations
Research Honey-guide
