USED IN NATURAL HISTORY. 



ottra, tail. Having a long or large 

 tail. 



MAC'TRA. Lat. A kneading-trough. 

 Name of a genus of bivalves. 



MACULATED. Spotted ; marked with 

 spots. 



MADREPO'RA. Lat. fr. fr. madre, 

 spotted, and Lat. porus, pore. A 

 genus of corals, (p. 14 1, Book viii). 



MAI/REPORE. A genus of zoophytes. 



MJE'NAS. fr. gr. menis, wrath. Spe- 

 cific name of a crab. 



M^KNU'RA, or M^U'RA. Probably a 

 corruption fr. gr. pandoura, a mu- 

 sical instrument resembling a 

 lute. Generic name of the lyre- 

 birds. 



MAJOR. Lat. Greater, larger. 



MAGNESIAS. Containing magnesia. 



MAGNE'SIAN LIMESTONE. Lime- 

 stone which contains magnesia. 

 An extensive series of beds lying 

 above the coal measures. 



MAGNE'SITE. Native carbonate of 

 magnesia. 



MAGNET. Loadstone is the natural 

 magnet, which has the property 

 of attracting iron. Artificial mag- 

 nets are prepared so as to possess 

 the peculiar attractive properties 

 of the loadstone. 



MAGNE'TIC. Having properties of 

 the magnet or loadstone. 



MAGNETISM. The science which 

 investigates the phenomena pre- 

 sented by natural and artificial 

 magnets, and the laws by which 

 they are connected. 



MAG'NU:M. Lat. Great. 



MAGOT. Fr. A baboon. 



MA'GUS. Lat. Magical. 



MALACO'LOGT. fr. gr. malakos, soft ; 

 logos, a description. That depart- 

 ment of natural history which 

 treats of the mollusca, compre- 

 hending the examination of both 

 the animal and its shell. 



MALACOPTERT'GIAN. fr. gr. malachos, 

 soft; pterux, fin. Soft -fin. Ap- 

 plied to fishes that have no bony 

 fin-rays. 



MALACOPTERT'GII. Lat. plur. of ma- 



lacopterygius. Systematic name 

 of an order of fishes. 



MALAPTE'RURI. Lat. plur. of ma- 

 lapterurus, fr. gr. mala, much; 

 pteron, tin ; red, I fall off. Imper- 

 fect fins. Generic name of a fish 

 of the family of siluroides. 



MALAR (bone). fr. lat. malum, an 

 apple; so called from its round- 

 ness. The cheek-bone. 



MALLEABI'LITT.-A property of some 

 metals, by which they are capa- 

 ble of being beaten out into thin 

 plates by a hammer. 



MALLE'OLUS. Lat. A little ham- 

 mer. In the botanical process of 

 layering, this term is applied to 

 the layer, which is separated from 

 the parent plant, from its lower 

 end resembling a hammer-head, 

 of which the new plant repre- 

 sents the handle. 



MAL'LEUS. Lat. A hammer. A ge- 

 nus of ostracea. 



MA'LUS. Lat. An apple-tree. 



MALVA'CEJE. Name of a family of 

 plants. 



MAM'MA. Lat. The breast, pap. 

 nipple, or teat. 



MAM'MA. Lat. plur. of mamma. 



MAM'MAL. A milk-eating animal : 

 any animal that is suckled while 

 young, is called a mammal. 



MAMMA'LIA. fr. lat. mamma, breast. 

 Systematic name of the class of 

 animals that suckle their young. 



MAMMALA'TED. Studded with nip- 

 ple-like projections. 



MAMMALi'FERous.-Containing mam- 

 mals, or their fossil remains. 



MAMMA'LOGY. fr. lat. mamma, breast, 

 and Gr. logos, a discourse or trea- 

 tise. That part of natural his- 

 tory which treats of mammifer- 

 ous animals, or mammals. 



MAM'MART. fr. lat. mamma, a breast. 

 Belonging or relating to the breast. 



MAMMI'FERJE. fr. lat. mamma, a 

 breast ; fero, I carry. Animals 

 that have teats. Mammals. 



MAMMI'FKROCS. Belonging to mam- 

 mifent; having mammae. 



