256 GLOSSARY. 



DU'RA MA'TER (L.). Literally, the hard mother ; the tough membrane 

 which envelops the brain. 



UYS-PEP'SI-A (Gr. dvS, dus, difficult, an&iteitrGOypep'to, to digest). Dif- 

 ficult or painful digestion ; a disordered condition of the stomach. 



E-MUI/SION (L. emul'geo, to milk). Oil in a finely divided state sus- 

 pended in water. 



EN-AM'EL (Fr. email). The dense material which covers the crown 

 of the tooth. 



EN'ER-GY, Specific, of a Nerve. When a nerve of special sense is 

 excited, whatever be the cause, the sensation experienced is that 

 peculiar to the nerve ; this is said to be the law of the specific 

 energy of the nerves. 



EP-I-GLOT'TIS (Gr. 7ti, epi, upon, and yXoorriS, glottis, the entrance 

 to the windpipe). A leaf-shaped piece of cartilage which covers 

 the top of the larynx during the act of swallowing. 



EX-CRE'TION (L. excer'no, to separate). The separation from the blood 

 of the waste particles of the body ; also the materials excreted. 



EX-PI-RA'TION (L. expi'ro, to breathe out). The act of forcing air out 

 of the lungs. 



EX-TEN'SION (L. ex, out, and ten' do, to stretch). The act of restoring a 

 limb, etc., to its natural position after it has been flexed, or bent ; 

 the opposite of Flexion. 



FE-NES'TRA (L.). Literally, a window ; the opening between the 

 middle and internal ear. 



FI'BRIN (L. fi'bra, a fibre). An albuminoid substance found in the 

 blood; in coagulating it assumes a fibrous form. 



FLEX' ION (L. flee' to, to bend). The act of bending a limb, etc. 



FOL/LI-CLE (L. dim. offol'lis, a bag). A little pouch or depression in a 

 membrane ; it has generally a secretory function. 



FUN'GOUS GROWTHS (L.fun'gus, a mushroom). A low grade of vege- 

 table life. 



GAN'GLI-ON (Gr. yayyXiov, ganglion, a knot). A knot-like swell- 

 ing in the course of a nerve ; a smaller nerve-centre. 



GAS'TRIC (Gr. yadrrfp, gaster, stomach). Pertaining to the stomach. 



GLAND (L. glans, an acorn). An organ consisting of follicles and 

 ducts, with numerous blood-vessels interwoven ; it separates some 

 particular fluid from the blood. 



TLOS'SO-PHAR-YN-GE'AL NERVE (Gr. yXooGGa, glossa, the tongue, and 

 (pdpvyE, pharunx, the throat). The nerve of taste supplying the 

 posterior third of the tongue; it also supplies the throat 



GLU'TEN (L.). Literally, glue : the glutinous albuminoid ingredient 

 of wheat. 



