MONASITE 



223 



MONOTHALAMUS 



Secondary M., in which two atoms of hydro- 

 gen are xemoved = Imide bases. Tertiary 

 M., in which the whole of the hydrogen is 



displaced=Nitrile bases. 



Monasite, (mon'a-sit). A mineral, chiefly 

 phosphate of cerium and lanthanum. 



Moncrieff gun-carriage: for lowering the 

 gun when fired, and raising it again when 

 loaded; intended to protect the gunners 

 while loading. 



Monera, ( mon'e-ra ). [Gk. monos, one ]= 

 Moneres. A class of Protozoa, consisting of 

 mere expansions of jelly-like protoplasm, 

 covering a large part of the bed of the sea 

 in more or less continuous sheets. Supposed 

 to be " the first ancestor of all living things: " 

 developed into Amoeba, and eventually into 

 the higher forms of animal life. 



Money-wort = Lysimachia nummularia. A 

 prostrate herb, belonging to Primulaceae. 



Mongol, (mong'gSl). v. Mongolian. 



Mongolian, ( mong-go'Ji-an). A division of 

 the human race. Yellow : with flat features, 

 high cheek bones, and black hair. Kalmucs, 

 Chinese, Mantchures, Japanese, &c. 



Mongoose, (mon'goose). A variety of the 

 Ichneumon, found in Ceylon, which feeds on 

 snakes. 



Monimiaceae, ( mon - i-mi-a'se-e ). Aromatic 

 plants, chiefly S. American, somewhat re- 

 sembling the laurel. 



Monitor, ( mon'i-tor ). [The Latin name.] 

 A lizard-like reptile, found on river banks, 

 belonging to Sauna: named from being often 

 found in the neighbourhood of the crocodile. 

 M. o/JftfesLaoerta Nilotica. 



Monk's. M. hood=A.comtnm napellus: a 

 very poisonous plant. M. rhubarb=Ruwex. 

 alpinus. 



Monkey, (mung'ki). [MoniccMo, the Italian 

 name.] A general term for tailed apes. 

 Capuchin M. =Cebus. Diana M.=Cei~co~ 

 pithecus Diana. Dog-headed M.=Gynoce- 

 phalus. Howling M.=Mycetes. Lazy M.= 

 Loris. Proboscis M. =Semnopithecusnasius. 

 Silver-haired M. = Lagothrix Humboldii. 

 Slow M.=Semnopithecus. Squirrel M.=. 

 Callithrix sciureus. Weeping Jlf.=Sajous. 



Monkeys = Simiidse: M. of Old World= 

 Quadrumana: only some have prehensile 

 tails. M. of S. .4merica=Pedimana: with 

 prehensile tails. 



Mono, (mon'o). [Gk. monos, single.] A pre- 

 fix, implying only one. 



Monobasic, (mon-6-ba'sik). [Mono and Base, 

 q.v.] M. acids: having one atom of replace- 

 able hydrogen in each molecule/ e.g., HC1; 

 HN0 3 . M. salts=~M.. acids regarded as salts 

 of hydrogen. 



Monoceros, (mon-os'e-ros). [Gk. monos, single; 

 keras, horn. ]=The Unicorn: a southern con- 

 tellation. 



Monochlamydese, (mon-6-klam-id'e-e). [Gk. 

 monos, single; chlamys, cloak.] A sub- 

 division of Exogenous plants, including 

 those having only a calyx and no corolla. 

 v. De Candolle. 



Monochlorides, (mon-o-kld'rldz). [Monos and 

 Chloride, #.?;.] =Protochlorides: compounds 



of one atom of a monad with one atom of 



chlorine. 

 Monochord, ( mon'o - kawrd ). [Gk. monos, 



single; chorde, string.] A single string: an 



instrument of one string only, used for illus- 

 tration of the laws of sound. 

 Monochroite, ( mon-6-kro'it ). [Monos and 



Chromium, q.v.] A soft red mineral, chiefly 



chromate of lead. 

 Monochromatic, (mon-6-kro-mat'ik.). [Monoa 



and Chromatic, qv.] Of one colour only. 



M. light: light of one colour. Yellow M. 



light: exerts no chemical action. 

 Monoclinic, ( mon-o-klin'ik ). [Gk. monos, 



single; kleineo, I incline.] Inclining in one 



direction. M. minerals: have one axis obli- 

 quely inclined to the others. 

 Monocotyledons, (mon-6-kot-i -le'donz). [Monoa 



and Cotyledon, g.i;.]=Eiidogeus, q v : plants 



having but one seed-leaf, cf. Dicotyledons. 



v Jussieu. 

 Monodelphia, (mon-o-del'fi-a). [Gk. monos, 



single; delphys, womb.] Animals, belonging 



to Mammalia, with but one uterus, including 



all mammals but Marsupialia and Monotro- 



mata. cf. Didelphia and Ornithdelphia. 

 Monodon, (mon'6-don). (Gk. monos, single; 



odous, tooth.] M. wio?i0ceros=Narwhal, q.v. 



=Sea Unicorn. 

 Monoecious, (mon-e'si-us). [Gk. monos, single; 



oikos, house.]=:HermaphFodite: with both 



sexes in the same individual; used more 



especially for plants. 

 Monomyary, (mon-o-ml-a'ri-a). [Gk. monos, 



single; myon, muscle.] Bivalve molluscs, 



all marine, including the oyster, &c. , having 



only one large muscle to each valve : a division 



of Lamellibranchiata, q.v. 

 Monopetalae, ( mon-6-pet'a-le ). [Mono and 



Petal, $.v.]=Gamopeta]0e: plants having tha 



petals of the flowers more or less united. A 



sub-division in Jussieu's classification, q.v. 

 Monopetalous, (mon-o-pet'a-lus). [Mono and 



Petal, q.v.] Having the 



petals joiued so as to form 



but one. 

 Monopnoa, ( rnon - op'no - a ). 



[ Gk. monos, single; pnoe, 



breath.] Owen's term for 



a sub -division of reptiles, 



including all those that do 



not live in the water. 

 Monopodia, (mon-o-po'dia). Monopetalons. 



Branch system formed by lateral shooting. 

 Monosepalous, (mon-o-sep'a- 



lus). [Monos and Sepal, q.v.] ( 



Having the sepals of the 



calyx united. 

 Monosomatia. Used by Sie- 



bold for a sub-division of 



Rhizopoda. 

 Monosymmetrical, (mon-o- 



sim-met'ri-kal). [Monos and 



Symmetrical, q.v.] Used of 



flowers, &c., which can be 



divided into two exactly 



equal halves. 

 Monothalamous, ( m o n - 5 - 



thal'a-mus). [Gk. monos, Mouosepaloua. 



