98 



A GLOSSARY OF TERMS 



this all the other veins diverge, 

 either from its sides or its hase. 



MIGRA'TION. The act of going from 

 one country to dwell in another. 



WGUATORIA. ) t Mi 



Ml GRATORIUS. 



MI'GHATORY. fr. lat. migrare, to 

 move from one place to another. 

 Applied to animals which ha- 

 bitually change their place of resi- 

 dence. 



MILK YESSELS. Lacticiferous tissue : 

 vital vessels; vessels of the latex. 

 A peculiar tissue, consisting of 

 branched anastamozing tubes, ly- 

 ing in the bark or near the sur- 

 face of plants, and containing a 

 milky juice. 



MILI.-F.POHA. fr. lat. mt7, a thousand ; 

 pori, holes. A genus of stony po- 

 lyps, or corallines. 



MILIA'RIA. Lat. A bird that feeds 

 upon millet. Specific name of 

 the common bunting. 



MIL'IART. Granulate ; resembling 

 many seeds. 



MIL'LIOLITES, or MILI'OLA. fr. lat. 

 milium, a millet seed, and gr. lithos, 

 stone. A genus of foramini'ferous 

 fossil-shells found in the neigh- 

 bourhood of Paris. 



MILLSTONE GRIT. Coarse-grained, 

 quartzose sandstone. 



MILVUS. Lat. A kite. 



MI'MOSA. fr. lat. mimus, a comedian, 

 in allusion to its numerous varie- 

 ties. A genus, and a tribe of 

 plants. 



MINE. Ger. Any subterraneous 

 work or excavation which has for 

 its object 'the extraction of any 

 mineral products, as metallic ores, 

 coal, &c. 



MINERAL. Any inorganic natural 

 object, whether solid, liquid or ga- 

 seous. 



MINERALIZA'TION. The process of 

 converting a substance into a mi- 

 neral. 



MINERA'LOGY. fr. lat. minera, a mi- 

 neral or mine, and Gr. Zogos, a dis- 

 course. That branch of natural 



science which treats of the pro- 

 perties of minerals. 

 MINIA'TITS. In botany, scarlet, ver- 

 milion colour. 



Ml'NIMA 7 T T 



MINIMUM. 5 Lat Least " 



MINOR. Lat. Less, smaller 



MINUS. Lat. Little. 



MINTJ'TA. Lat. Minute, very small. 



MIOCENE. fr. gr. melon, less; kai- 

 wos, recent. In geology, a name 

 of a group of rocks of the tertiary 

 period, (p. 78, Book viii). 



MIRA'GE. Fr. A kind of natural 

 optical illusion, arising from the 

 unequal refraction of the lower 

 strata of the atmosphere. The 

 illusive appearance of water in 

 deserts is explained in this man- 

 ner. 



MIST. Visible atmospheric vapor. 



MI'TRA. Gr. A head-band, or dia- 

 dem. A genus of gasteropods. 



MI'TRAL. Of the form of a mitre, 

 or bishop's bonnet. The name 

 of two valves of the heart. 



MI'TRIFORM. Shaped like a mitre. 



MODERN FORMATION. Modern epoch. 

 Any geological formation which 

 is contemporaneous with man. 

 (p. 95, Book viii). 



MODIO'LUS. Lat. A bucket. A ge- 

 nus of mussels. 



MOLA'SSE. Fr. A fine-grained sand- 

 stone, usually soft and loose, but 

 sometimes sufficiently hard for 

 building purposes. 



MOLAR. fr. gr. mulos, a millstone, 

 or grindstone ; or fr. lat. mo/o. I 

 grind. That which bruises or 

 grinds. The grinders; jaw-teeth. 



MO'LECTILE. An atom ; a minute 

 portion of an aggregate. 



MOLLIS'SIMA. Lat. Softest. 



MOLOS'SUS. Lat. A species of large 

 dog. 



MoLLtrs'cA.-fr.lat. woZfts, soft. Name 

 of the second branch of the ani- 

 mal kingdom. 



MOLLUS'COUS. Belonging to mol- 

 lusca. 



MOLLUSK. fr. lat. tnoWw, soft. Any 



