MAO 



247 



MAG 



which in the Pacific and Northern 

 Oceans reaches the enormous 

 length of from 500 to 1500 feet, 

 so named in reference to the 

 extremity of its frond, swelling 

 out like a pear. 



Macrodactyli, n. plu., mak'ro- 

 ddkf-til'l (Gr. makros, long ; dak- 

 tulos, a finger), a group of the 

 wading birds. 



macroglossia, n., maUro-glos'si-a 

 (Gr. makros, long ; glossa, the 

 tongue), an extraordinary hyper- 

 trophic enlargement of the tongue, 

 in consequence of which it pro- 

 trudes from the mouth. 



macrophyllin, a., matf-rd-fil'lm 

 (Gr. makros, long'phullon, a leaf), 

 in bot. , having elongated leaflets. 



Macropiper, n., mak'rd-pip'er 

 (Gr. makros, long ; pippul, a 

 Bengali name), a genus of plants, 

 Ord. Piperacese : Macropiper 

 methysticum, meth-ist'ik-um (Gr. 

 methusis, intoxication), the Kava 

 of the S. Sea Islanders, used for 

 preparing a stimulating beverage. 



macropodous, a., mak-rop'od-us 

 (Gr. makros, long ; pous, a foot, 

 podes, feet), in hot., having the 

 radicle large in proportion to 

 the rest of the body, as in the 

 thickened radicle of a monocotyl- 

 edonous embryo. 



macrospores, n. plu., mak'ro- 

 sporz (Gr. makros, long ; spora, 

 seed), the large spores of Lyco- 

 pods, etc. : macrosporangia, n. , 

 mdk'rd-spdr-anf'i-a (Gr. anggos, 

 a vessel), the cells or thecse which 

 contain macrospores. 



macrotherm, n., mak'ro- therm 

 (Gr. makros, long ; therme, 

 heat), same as ' megatherm, ' 

 which see. 



Macrura or macroura, n., mdk- 

 r6r'-d (Gr. makros, long ; oura, 

 a tail), a family of decapod crust 

 aceans having long tails, as the 

 lobster, the shrimp, etc. : mac- 

 rourous, a., mak-rdr'-us, having 

 long tails. 



macula, n., mak f -ul-d, maculaa, n. 



plu., -ul-e (L. macula, a spot), a 

 spot, as on the skin ; skin dis- 

 eases characterised by too much 

 or too little pigment in the parts 

 affected, as in the case of moles 

 and freckles, which arise from too 

 much colouring matter in the 

 skin : maculate, a., mdk'-ul-dt, 

 stained ; spotted : macula crib- 

 rosa, krib'Tdz'-a (L. cribrum, a 

 sieve), in the internal ear, the 

 minute holes for the passage of 

 the filaments of the auditory 

 nerve : m. germinativa, jerm'-in- 

 dt-lv'-d (L. germino, I bud or 

 germinate), the germinal spot, 

 found in the vesicle of the ovum : 

 m. lutea, lot'e-a (L. lutum, a 

 yellow colour), the yellow spot, a 

 part of the retina lying directly 

 in the axis of vision. 

 madder, n., mdd'der (AS. mad- 

 dere), the root of the Rubia tinc- 

 toria containing the colouring 

 matters, madder purple, orange, 

 and red, Ord. Rubiacese. 

 Madia, n., mdd'i-d (Gr. mados, 

 bald, smooth), a genus of rather 

 handsome plants, natives of 

 Chili, Ord. Compositse, Sub-ord. 

 Corymbiferse : Madia sativa, sat- 

 iv'-d (L. sativum,so\\n or plan ted), 

 a species cultivated for the bland 

 oil extracted from its fruit. 

 Madrepore, n., mad'-rfrpor (F. 

 madrepore from madrd, spotted ; 

 pore, a pore), a genus of corals 

 having numerous star - shaped 

 cavities dotting the surfaces of its 

 spreading branching form : mad- 

 reporiform, a.,ma^-re-jr>or^^orm 

 (L. forma, shape), perforated 

 with small holes, like a coral ; 

 applied to the tubercle of the 

 Echinoderms by which their 

 ambulacral system generally com- 

 municates with the exterior. 

 magma ; n., mag' ma (L. and Gr. 

 magma, the dregs of an unguent), 

 a crude mixture of an organic or 

 inorganic substance in a pasty 

 state ; a thick ointment or con- 

 fection. 



