GLOSSARY. 



101 



son). The science of the operations 

 of the understanding which are 

 subservient to the estimation of 

 evidence ; pointing out the rela- 

 tions between given facts and 

 the conclusions to be drawn from 

 them. 



logog'raphy (Gr. \oyos, logos, a 

 word ; ypa<p<a, graphd, I write). 

 A system of printing by words 

 instead of letters. 



Logom'eter (Gr. Acryoy, logos, propor- 

 tion ; /uerpoj/, metron, a measure). 

 A scale for measuring chemical 

 equivalents. 



Logomet'ric (Gr. \oyos, logos, a pro- 

 portion ; ptTpov, metron, a mea- 

 sure). Measuring proportionate 



Lomenta'ceons (Lat. lomen'tum, bean- 

 meal). In botany, applied to 

 legumes or pods with transverse 

 partitions, each division containing 

 one seed. 



Longi- (Lat. longus, long). A pre- 

 fix in compound words implying 

 length. 



Lon'gitude (Lat. longus, long). 

 Length; the distance, eastward or 

 westward, of any meridian on the 

 earth's surface from some fixed 

 meridian arbitrarily selected. The 

 longitude of a celestial body is the 

 arc of the ecliptic between the first 

 point of Aries and the circle which 

 measures its latitude. 



Loph'iodon (Gr. Ao^os, loph'os, a 

 crest or ridge ; 65ovs, odous, a 

 tooth). An extinct pachydermatous 

 or thick-skinned animal found in 

 the tertiary strata ; so called from 

 the eminences on its teeth. 



Lophobran'cnaate (Gr. \o$os, loph'os, 

 a tuft ; jSpcryxto, bran'ckia, gills). 

 Having gills arranged in tufts : ap- 

 plied to an order of fishes. 



Lo'ricate (Lat. lori'ca, a coat of 

 mail). Covered as with a coat of 

 mail or plate armour, as crocodiles, 

 alligators, &c. 



Loxodrom'ie (Gr. Aoos, loxos, ob- 

 lique ; Spofj.os, drom'os, a course). 

 Having an oblique course ; applied 

 to a course in sailing, in which the 

 ship is directed constantly towards 



the same point of the compass in 

 an oblique direction. 



Lu/bricate (Lat. lu'bricus, slippery). 

 To make smooth or slippery. 



Lu'cules (Lat. lux, light ; ule, de- 

 noting smallness). A name given 

 to the variations in the intensity of 

 the brightness of the sun's disk. 



Lumba'go (Lat. lumbus, the loin). 

 A rheumatic affection of the region 

 of the loins. 



Lumbar (Lat. lumbus, the loin). 

 Belonging to the loins. 



Lumbrica'les (Lat. luinbri'cus, an 

 earth-worm ; from their shape). A 

 name given to certain small long 

 muscles of the fingers and toes. 



Luminiferous (Lat. lumen, light; 

 fero, I bear). Producing or con- 

 veying light. 



Lu'minous (Lat. lumen, light). 

 Shining; applied to bodies which 

 are original sources of light. 



Lu'nacy (Lat. luna, the moon ; be- 

 cause formerly supposed to be in- 

 fluenced by the moon). Insanity 

 or madness ; strictly, that form of 

 insanity which is accompanied by 

 intervals of reason, but commonly ap- 

 plied to all states of unsound mind. 



Lunar (Lat. luna, the moon). Re- 

 lating to the moon ; measured by 

 the revolutions of the moon. 



Lu'nate (Lat. luna, the moon). 

 Shaped like a crescent. 



Lu'natic (Lat. luna, the moon). 

 Affected with lunacy. 



Luna'tion (Lat. luna, the moon). 

 The period of the monthly revolu- 

 tion of the moon, or the time from 

 one new moon to another. 



Luniso'lar (Lat. luna, the moon ; sol, 

 the sun). Compounded of the 

 periods of revolution of the sun and 

 moon. 



Lu'nula (Lat. a little moon). The 

 portion of the human nail near the 

 root, which is whiter than the rest ; 

 also the narrow portion at the 

 margins of the semilunar valves of 

 the heart. 



Lupus (Lat. a wolf). In medicine, a 

 disease characterised by its tendency 

 to destructive ulceration of the 

 parts which it attacks. 



