178 GLOSSARY. 



Le'cithin. A hydrocarbon found in blood corpuscles, nerve 



tissue, &c. Is a glycero-phosphate of neurin. 

 Legu'min. A proteid substance found in peas, beans, &c. 

 Leu'cin. A nitrogenous waste material resulting from the 



splitting up of hemipeptone. 

 Leu'comaines, Alkaloids formed by the decomposition of 



albuminous bodies during normal metabolism ; allied to 



kreatin. 

 Lieberkiihn's jelly. A gelatinous substance obtained by 



treating egg albumin with liquor potassae. 

 Lieberkiihn's glands. Simple tubular glands occurring in 



small and large intestines. 

 Liquor Cotunnii. A fluid separating the osseous from the 



membranous labyrinth of ear. Also called " Perilymph." 

 Lor do 'sis. Forward curvature of spine. 

 Lu'men. The central tube or space surrounded by epithe- 

 lium in which the secretion of a gland collects; the central 



part of any tube. 



Luschka's gland. Vide "Coccygeal gland." 

 Lus'citas (L. luscus, blind of one eye). Outward fixation of 



the eyeball. 

 Lux'us consumption (L. luxos, excess). The direct oxidation 



of superfluous food stuff's absorbed into the blood. 



Mac'ula acustica (Heb. machala, blemish ; Gr. akoustes, a 

 hearer). Special terminations of auditory nerve in the 

 utricule and saccule. 



Mal'tose. A sugar formed by the action of saliva or pancreatic 

 juice upon starch. Contains one molecule less water 

 than glucose. 



Manom'eter (Gr. manes, rare ; metron, measure). An instru- 

 ment for measuring pressure of blood and other fluids. 



Mecke'lian bar. A mass of embryonic cartilage from 

 which the following structures are developed : Part of 

 lower jaw, internal lateral ligament of jaw, and the 

 malleus. 



Meckel's diverti'culum. A pouch in the ileum, sometimes 

 connected with umbilicus. It is the remnant of vitelline 

 duct. 



Medullary rays. Striations in kidney due to bundles of 

 collecting tubes radiating from pyramid of Malpighi. 



