MET 



Wrist ; metatarsal is the same part in 

 the foot. 



METAGALLIC ACID. Gallic 

 acid changed by heat ; its formula is 



Cl2 H3 O3. 



iMETALLOlD. Potassium, sodium, 

 and other alkaline metals ; it is some- 

 times applied to the inflammable el- 

 ements, as sulphur, phosphorus. 



METALS. Elementary bodies, re- 

 markable for their lustre ; they con- 

 duct electricity and heat, and are neg- 

 ative electrics. The following table 

 gives their names, specific gravity, 

 and melting points : 



Names of Metals. 



1. Gold 



2. Silver . 



3. Iron 



4. Copper . 



5. Mercury 



6. Lead 



7. Tin 



8. Antimony 



9. Bismuth 



10. Zinc 



11. Arsenic . 



12. Cobalt . 



13. Platinum 



14. Nickel . 



15. Manganese 



16. Tungsten 



17. Tellurium 



18. Molybdenum 



19. Uranium 



20. Titanium 



21. Chromium 



22. Columbium 



23. Palladium 



24. Rhodium 

 2.5. Iridium . 



26. Osmium 



27. Cerium . 



28. Potassium 



29. Sodium . 

 no. Barium . 

 St. Strontium 



32. Calcium 



33. Cadmium 



34. Lithium . 



35. Silicium . 



36. Zirconium 



37. Aluminum 



38. Glucinum. 



39. yttrium . 



40. Thorium 



41. Maenesium 



42. Vanadium 



Specific 



Gravity. 



19-25 

 10-47 



7-78 



8-89 

 13-56 

 11-35 



7-29 

 6--0 

 9- SO 

 -7-00 

 5-88 

 8-53 



8-37 

 6-85 

 17-t)0 

 6-11 

 7-40 

 9-00 

 5-30 



11-50 



0-86 

 0-97 



8-60 



Melting 



Points. 



J-'ahr. 

 2016" 

 1873 

 (2800? 



! Smith's forge. 

 1996 

 —39 

 612 

 442 



497 

 773 



2810? 

 1 oxyhydrogen 

 > blowpipe. 

 ■ 2810 ? 



Smith's forge. 



620? 





136 

 190 



METAMORPHOSIS (from //era, 

 change, and uop(pr],form). Transform- 

 ation. In entomology, the changes 

 the metabolian insects pass through 

 of larva, pupa, and imago. In botany, 

 the doctrine that the flowers, sta- 

 mens, carpels, and seeds are modifi- 

 cations of the leaf 



METAPHOSPHORIC ACID. See 

 Phosphorus. 



METASTASIS (from^uera, change, 

 496 



MIC 



] and araaic, place). The change of an 

 affection or pain from one part of the 

 body to another. 



METAYER. A farmer who rents 

 land at a certain proportion of the 

 crop, usually half, the owner finding 

 tools and animals. 



METEOROLOGY (from fiereopcc, 

 aerial, and /.oyoc). The science which 

 treats of the physical changes occur- 

 ring in the atmosphere, the formation 

 of clouds, fogs, rain, winds, and the 

 phenomena of lightning. 



METEORITE, AEROLITE. The 

 masses of metallic iron occasionally 

 precipitated to the earth ; they are 

 supposed to be derived from the 

 moon : showers of many hundreds 

 have sometimes fallen together. 



METEORS. The transitory phe- 

 nomena occurring in the air ; thus, 

 aerial meteors are winds, tornadoes, 

 &c. ; aqueous meteors are rains, hail, 

 fogs ; luminous meteors are halos, 

 rainbows, lightning, northern lights. 



METHEGLIN. Mead. 



METHOL. A hydrocarbon, ob- 

 tained by distilling xylite with sul- 

 phuric acid. 



METHYL. A volatile, combusti- 

 ble spirit, soluble in water, closely 

 resembling alcohol, is obtained from 

 wood, and contains this compound 

 radical, symbol Me. ; formula, C2 H3 ; 

 it has not been isolated. Numerous 

 compounds of methyl are known. 



MEZEREOX. Dapkne mczereum. 

 A highly ornamental shrub with pink 

 flowers, the spurge laurel : the w hole 

 plant is poisonous. It is readily cul- 

 tivated, although exotic. 



MEZZANINE. In architecture, a 

 low story introduced betw^een two 

 taller ones. 



MIASM. Malaria, infectious va- 

 pours from marshes, &c. 



MICA. Isinglass, silver. A bright 

 laminated mineral of every colour, 

 elastic, and more or less transparent. 

 An ingredient in granite and most 

 ancient rocks, often occurring in 

 large sheets, and used as a substitute 

 for glass. It consists of silica, 42 ; 

 alumina, 16 ; magnesia, 25 ; potash, 

 7i ; manganese, iron, &c., 95 in 100 

 parts. 



