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water that dribbled down the sides, and tasting the moisture by dipping in their fingers. I went to them, and found them Germans. They were very obliging; and, as I understood the language, informed me they were very well versed in searching aiter inines, which by thus tasting the water they could discover. I mentioned what I had heard of the divining-rod, in use on the Mendip Hills, in Somersetshire, which bends when held over places that coutain metallic ore; they said that might wel be, for a piece of gold, siiver, or any metal, suspended on the end of a very slender switch, when carried over a mine of the same metal, would be so attracted as to bend the end of the stick. Some time after, I happened to be at a silversmith's at Bath, who had a very curious pair of scales, inclosed in a glass case. I admire i them; and he said they would weign to the 200th part of a grain ; and there lay in the window a block of solid silver, about six inches square and two inches thick. What the abovementioned persons told me at Scarborough came into my head, and I thought this a good opportunity to try how far what they said was true. I, therefore, had a shilling put into one scale, and the heam, which was about 18 inches long, made perfectly level by weights in the other scale; then I introduced the block of silver under the scale that had the shilling, and the beam dropped at that end a full quarter of an inch, and stood there until the block of silver was removed, when it immcdiately returned to the equipoize and level it was before: and this we repeated several times, and it always answered the same.

These curious scales were inclosed in the glass case, and the door shut, at every experiment.

The other matter, I think, may be made useful for keeping metal pipes or boilers from the furring, or sony excrescence, that lodges from boiling water often in them. A friend of inine at Rochester put a common flat shell of an oyster into a new tea-kettle, and kept it in two or three years. During all the time the shell was in the tea-kettle, the tea-kettle gathered no fur, but all the furring settled on the oyster shell, which I have in my possession now, and which is about two inches thick, and something bigger than it was when put in, and perfectly smooth at the bottofi, and where at the edge it lead from time to time slipped against the side of the tea-kettle, in appearance like a hone you set razor's on; but on the top of the shell the fur was like any thing boiling up, curiy aid uneven. The water there comes from chalky lands. I live in Essex, and have tried the shell, which also gathered the fui, bui of a different appearance, being more like smooth sand or gravel; but the shell increased in thickness. If this can be turned to account, in respect to keeping boilers and pipes clear, or shewing the nature of the land through which the streams have passed, I shall be happy. 1791, March.



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Accents, dissertation on, 385.
Acta Diurna, 1.
Adages, Greek and Latin, 162, 199.
Adam, his beard, 293 ;-his voice, 294.
Addison, on Paradise Lost, 360, 368 ;-his observation on Virgil's

Achates, 378.
Ænigma, antiquity of the, 40.
Ajax, the silence of, in the inferna). shades, 164.
Albumazar, comment on the old play of, 98.
Allegories in ancient history accounted for, 95.
Analogy of language, remarks on, 173, note.
An't please the pigs, 88.
Apuleius, 358.
Arabian Tales, on the authenticity of, 382.
Architecture, Treatises on Saxon and Gothic, 249.
Aristophanes, 328.
Articles, on the promiscuous use of, 333.
Assassin, origin of the word, 146.
Astle on Writing, 281.
Auca, the signification of, 113.
Aurora Borealis, 450.
Authors, on the mistakes of, 157.

·M in

Baragouin, etymology of, 132.
Barometer, the utility of, in agriculture, 523.
Barrigenæ, who, 129, 131.
Bath waters, phenomenon of the, 488.
Bathurst, Dr. Ralph, bis death, 495.
Baudius, his Latin verses addressed to his friends, 171.
Beards, extraordinary remark relating to, 293.
Bentham, on Saxon and Gothic Architecture, 249.
Bentley, a passage from one of his Sermons, 246;-on Paradise

Lost, 361.
Bible, various English translations of, 116;--the translators of,

120;-revision of the English, 148.
Bibles, Manuscript, 16.
Biblical difficulties obviated, 93.
Blayney, Dr. his account of the collation and revision of the Eng-

lish Bible, 148.
Bleak, on the word, 238.
Bones, on the brittleness of, in frosts, 494 ;--whether only sub-

stances are hurtful to, 497 ;--fossil, discovered in several

counties, 460.
Bonfire, 202.
Borsholder, 201.
Bourn, whence derived, 356.
Breviaries, 23.
Bull's blood, a poison among the ancients, 414.
Burton, his Latin Preface intended for the History of Leicester-

shire, 378.


Cat in the pan, to turn, 66.
Catalogue of the Harleian Library, 8.
Catalogues, book, the utility of, 9, 10.
Cats, Electricity in, 437.
Catullus, critical remark on, 158.
Cedars, on the growth of, in England, 519.
Central fire in the earth, 420.
Cervantes, 358.
Cesena, accident which happened to a woman at, 402..
Chaucer, on the sleep of plants, 110;-on the gossamer, 478.
Chesable, what, 109, note.
Chesnut-tree at Tamworth, 487.
Child, gigantic, account of, 519.
Chronicles, 25.
Cicero, on a passage in his treatise De Senectute, 125;--De Ora,
Classic authors perverted, 87.
Cleveland, 312.
Cochineal, history and culture of, 423.
Colours, passages relating to, often obscure, 269.
Coluber of Virgil, 471.
Cowley, 322.
Crashaw, epitaph by, 243;-imitated by Pope, 324
Crasis, the grammatical figure, 218.
Crowder, as cunning as, 64.

tore, 311;-his use of exclamations, 343.

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Daisy, derivation of, 111.
De Imitatione Christi, inquiry concerning the real author of that

work, 177.
Despair, as described by the poets, $38.
Deviks Verses, 161.
Dew, on the phenomenon of, 472.
Dido, the silence of, in the infernal shades, 164.
Digestion, experiments on, 426.
Divining-rod, 527.
Drayton, 312, 321, 326.
Dreams, the causes of, 391 ;-Joy and grief in, why superior to

reality, 394.
Dryden, on the English Language, 77 ;-his description of Night,

184, 189;-Ode in Memory of Mrs. Killigrew, 341;
Hind and Panther, 354;-translation of a line in Virgil,
47 8.

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Earing, explanation of the word, 89.
Earthquakes, how produced, 446.
Eikon Basilike, 54.
Electricity in cats, 437.
Elephants bones dug up in England, 460.
Ellipsis, instances of, in Shakespeare, 127 ;-observation on that.

figure, 140.
English language, very vague, 77.
Evaporation, 482.
Expressions, local, illustrated, 368.


Fathers, manuscripts of the, 22.
Fevers, cured by mysic, 406.

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