822 
Iron, native, 494 ; meteoric, 495 5 magne¬ 
tic, 496. 
Iron pyrites, 498. 
Iferine, 515. 
Ifis, or coral, found petrified, 53O. 
Kidd’s Outlines of Mineralogy, 436, 440. 
Kilkenny-coal, 477. 
Kirwan the introducer of the Wernerian 
fyftem, 438. 
Klaproth, death of, 465.—Martin Henry 
von Klaproth, profeftov of chemiftry at 
Berlin, and by far the moft celebrated 
cliemift in Germany, had been a diftin- 
guiflied writer for at leaft forty years; 
for he publifhed a fet of Chemical Expe¬ 
riments on Copal in the years 1776. He 
devoted himfelf entirely to analytical che- 
miftry; and to him we are chiefly in¬ 
debted for the knowledge which we atpre- 
fent poflefs of the mineral kingdom, and 
for the formulas employed to develope 
the conftituents of minerals. His labours 
are configned in fix ottavo volumes under 
the title of “ Beitrage zur Chemifchen 
Kenntuifs der Mineralkorper; the firit 
volume of which was publi.'hed in 1795, 
and the laft in 1815. He was the difco- 
verer of Uranium, and he confirmed and 
completed the difcovery of Tellurium and 
Titanium. He likewife difcovered Cir- 
conium and mellitic acid. 
KoIIyrite-clay, 455. 
Kryolite-fluor, 451. 
Kupfer-nickel, 505. 
Lava, 443. 
Lavoifier in fome degree anticipated the dif¬ 
covery of the new metals, 509. 
Lazulus, lazulite, or lapis lazuli, 443 - 
Lead, various kinds of, 501. 
Lemnian earth, 452, 3. 
Lime, various kinds, 448. 
Linnmus’s outline of mineralogy, 434. 
Liver-ftone, 447. 
Loadftone, or magnet, 496. 
Lodes, different directions of, 425. 
Lydius, Lydian ftone, 443. 
Madrepore-ftone, 4485 how formed, 521; 
found petrified, 530. 
Magnefiata, magnefia", 442, 449. 
Magnefium, manganefe, 444, 514. 
Magnet, or loadftone, 496. 
Magnetifm of nickel and its alloys, 505. 
Malachite, or mountain-green, 492, 4. 
Malacholite, or glafly aftinote, 445. 
Manganefe, phofpbat of, 514. 
Marcafite, or arfcnical pyrites, 512. 
Marga, marl, 442. 
Marmor, marble, 442. 
Martin, his fyftem on the fubjeft of petri¬ 
factions, or foflils, 518 ; his opinion as to 
a general deluge, 519. 
Mellites, mellite, 443. 
Menachanite, 515. 
Mercury, native and muriat, 4895 oxyd, 
fulphuret, &c. 490. 
Metals, compofition of, 435; the fourth 
'clafs of mineral fubftances, 443, 448- 
517; malleable, 443, 478-510; brittle, 
444 > 5 , °- 5 i 7 . 
Mica, 435, 443. 
Mill-ftone, 473. 
Mineralogy among the ancients, 434 ; Lin¬ 
naeus’s outline of mineralogy, 434-436; 
Kidd’s, 436-438, 440; various fyftems, 
438-442; Ginelin’s improvement of the 
Linnaean fyftem, 442 to the end. 
Mines, their moft common direction, 425; 
how firft difcovered, 426 ; by the divi¬ 
ning-rod, ibid, by lhoding,427; beftfitua- 
tion for, ibid, management of, 431 ; laws 
relating to, 432 ; general account of geld 
mines, 480; of filver mines, 483; cobalt 
mine, 513. 
MINERALOGY. 
Mine Adventurers Company, 432. 
Mines Royal Society, 428. 
Mining very early praftifed in England, 428; 
progreffive hiftory of, 428-431; Devon 
firft noticed as a mining-riiftriCt, 430. 
Mkabile, wonderful or admirable fait, 443, 
553 . 4 - 
Mlfpickel, or arfeniat of iron, 498; or fer¬ 
ruginous arfenic, 512. 
Mocha-ftone, or mofs-ftone, 464. 
Molyudaenum, molybdenite, 444, S 1 ?- 
Moon-ftone. 462, 3. 
Mortar, belt compofition of, 448. 
Mountain-blue, 491. 
Mountain-butter, 474. 
Mountain-cork, mountain-flax, and moun¬ 
tain-leather, 445. 
Mountain-green, 492. 
Mundic, 493. 
Muria, 443. 
Muriat of mercury, mild and corrofive, 489; 
of copper, 492. 
Mufcle-fhells, petrified, 528. 
Naphtha, 475. 
Natrum, natron, 443. 
Nautilus, petrified, 529. 
Niccolum, nickel, 444; invariably prefent 
in native and in meteoric iron, 495; ge¬ 
neric chara&crs, 504; fpecies, 505. 
Nitrum, nitre, 443. 
Ocean, the mother of Earth, 436. 
Ochre, red, yellow, and brown, 454; iron, 
497 - 
Olivinus, olivine, 447. 
Onyx, 464, 5. 
Opalus, opal, 443. 
Ornithulithus, foftil birds, 444; the beak, 
bones, and feathers, 523. 
Orpiment, or yellow arfenic, 512. 
Ofmium, a metal lately difcovered, 479, 
5 ° 7 - 
Ox, petrified fkeleton of, 522. 
Oyfters and fcailops, petrified, 528. 
Palladium, firft difcovered in platinum, 479 ; 
farther deferibed, 506, 7. 
Parker’s cement, 448. 
Parkinfon, Mr. his opinion on the procefs 
of petrifaction, 518; on the world as im¬ 
proved by the deluge, 519, 20. 
Pennatula, or fea-pen, found petrified, 531. 
Petrifactions, 435, 6; how produced, 517 ; 
the genera in order, 520 & feq. Cuvier’s 
difeoveries in this clafs, 520, 523 ; La¬ 
marck’s, 531. 
Petroleum, or rock-oil, 475. 
Petrofilex, 443. 
Pewter, how formed, 506. 
Phengites, a kind of alabafter, 449, 
Phytolithus, 444; fpecies of fofiil vegeta¬ 
bles, 531, a. 
Picrofpatum, 442. 
Pinkerton’s Petralogy, 441 ; his opinion as 
to fofiil human fkeletons, 521; of the 
horfe, 522; teftimony to Cuvier’s induftry 
and fkill, 523. 
Pinus, the pine-tree, and other fimilar wood, 
found in a petrified ftate, 532, 3. 
Pipe-clay, 452. _ 
Pifolithus, pifolite, 442. 
Pitch, mineral, 475. 
Plants, or their parts, found in a fofiil ftate, 
S 3 1 . 2 - 
Plalter of Paris, 449. 
Platinum, 443; its remarkable properties, 
478; recent experiments, 479, 505 ; ful¬ 
minating, 480. Since that flieet was 
printed, Mr Davy has communicated to 
the Royal Society the refult of his expe¬ 
riment. 0 . Thin plates of platinum were 
dillolved in jiitro-muriatic acid, the folu- 
tion evaporated todrynefs, and afterwards 
boiled in potalh and ammonia, in nearly 
the fame manner as fulminating gold is 
prepared. The produce is a grey powder, 
which Mr. Davy confiders as a triple fait, 
compofed of oxyd of platinum and am¬ 
monia. It explodes gently at 300° Fah. 
and violently at 400° ; whereas fulmina- 
ting gold explodes violently at tempera¬ 
tures between 120 0 and ;oo°. He found 
that too grains of this fulminating plati¬ 
num confifts of oxyd of platinum 82-5 ; of 
which 72 are metal, and 10-5 oxygen; of 
ammonia 9 0, and water 8 5—mo. 
Plumbum, lead, 444, 501-4. 
Plutonium, or Barium, 510. 
Ponderous Earths, 442, 446. 
Porcelain-clay, 452. 
Porphyrius, porphyry, 443. 
Potaflium, 444, 508, 9. 
Potter’s-clay, 452. 
Pryce, a valuable writer on mineralogy, 
425; his account of the divining-rod, 
426. 
Pudding-ftone, 473. 
Puteolana, puzzolana, 442. 
Pyrites, copper, 493, 4; iron, 498; auri¬ 
ferous, 499; tin, 499; arlenicai, 51/, 13. 
Pyromachus, flint, 443. 
Quartzum, quartz, 435, 443. 
Quickfand, 463. 
{Juickfilver. See Mercury. 
Rafpe’s opinion on gem-engraving, 465; 
combated by Mr. Landfeer, 466. 
Realgar, or red arfenic, 512. 
Retinafphaltum, 476. 
Rhinoceros, petrified bones of an unknown 
fpecies, 521, 2. 
Rhodium, a metal difcovered in Platinum, 
479 ; farther account of, 507. 
Rock, nature of, 435. 
Rock-alum, 474. 
Rock-oil, 475. 
Rocking-ftones, 467. 
Rome de 1 ’Ifie’s Cryftallographie, 439- 
Rotten-ftone, 455. 
Rowley-rag, 457. 
Ruby, true oriental, 458; rofe, occidental, 
and fpinel, 459. 
Ruthilite, or oxyd of titanium, 515. 
Salamander, petrified, 525. 
Salts, the fathers of ftones, 434; primary, 
436; the fecond clafs of mineral fub¬ 
ftances, 443, 473-5. 
Sand, different kinds of, 463 ; magnetic, 495. 
Sand-ftone, 472. 
Sanderac, realgar, or red arfenic, 512. 
Sapphire, 458. 
Sard, or fardine, 464. 
Sardonyx, 464. 
Schaum-earch, or filvery chalk, 448. 
Schiftofpatum, fatin-fpar, 442. 
Scorlus, 443. 
Selenite, a fpecies of gypfum, 449, 50. 
Serpentinus, lerpentine, 442. 
Serpent-ftones, 525. 
Shooing, for difeovering veins of metal, 427. 
Shorlite, 459. 
Sienite, or green-ftone, 467. 
Siliceous Earths, 443, 458. 
Silver, 444, 483-488. 
Silver-mines, how difcovered, 427; an ac¬ 
count of the principal mines, 483-6 ; aft 
of parliament relating to^ 486. 
Sinople, or flinty iron, 497. 
Slate of various fpecies, 456. 
Smiris, emery, 443. 
Snake-ftones, 525. 
Sodium, the metal from fjda, 444, 508, 
509, 10. 
Sputum, fpar, 435, 442. 
Specific gravity ot minerals, 437. 
Sphene, or nigrine, 516. 
Spinel, or balafs ruby, 459. " 
Sponge, petrified, 531. 
Stag’s horns, bones, &c. petrified, 522. 
Stalaftites, 
