GLOSSARY. 



A'QUE-OUS HUMOR (L. aqua, water). A few drops of watery color- 

 less fluid occupying the space between the cornea and crystalline 

 lens. 



A-RACH'NOID MEM'BRANE (Gr. ctpaxTT/, arachne, a cobweb, and 

 siSoS, eidos, like). An extremely thin covering of the brain and 

 spinal cord. It lies between the dura mater and the pia mater. 



A.R'BOR VI'T^E (L.). Literally, "the tree of life;" a name given to the 

 peculiar appearance presented by a section of the cerebellum. 



AR'TER-Y (Gr. cirip, aer, air, and Tijpsiv, terein, to contain). A 

 vessel by which blood is conveyed away from the heart. It was 

 supposed by the ancients to contain air ; hence the name. 



AR-TIC-U-LA'TION (L. articulo, to form a joint). The more or less 

 movable union of bones, etc. ; a joint. 



A-RYT'E-NOID CAR'TI-LA-GES (Gr. apvroara, arutaina, a pitcher). 

 Two small cartilages of the larynx, resembling the mouth of a 

 pitcher. 



A S-SIM-I-LA'TION (L. ad, to, and similis, like). The conversion of food 

 into living tissue. 



AU-DI'TION (L. audio, to hear). The act of hearing sounds. 



AU'DI-TO-RY NERVE. One of the cranial nerves; it is the special 

 nerve of hearing. 



AU'RI-CLE (L. auris, the ear). A cavity of the heart. 



BAR'I-TONE (Gr. fiapvt, barus, heavy, and roVo?, tonos, tone). A 

 variety of male voice between the bass and tenor. 



BEL-LA-DON'NA (It. beautiful lady). A vegetable narcotic poison. It 

 has the property of enlarging the pupil, and thus increasing the 

 brilliancy of the eye ; so called from its use by Italian ladies. 



BI-CUS'PID (L. U, two, and cuspis, prominence). The name of the 

 fourth and fifth teeth on each side of the jaw ; possessing two prom- 

 inences. 



BILE. The gall, or peculiar secretion of the liver ; a viscid, yellowish 

 fluid, and very bitter to the taste. 



BRONCH'I (Gr. fipoyxoS, bronkos, the windpipe). The two first 

 divisions or branches of the trachea ; one enters each lung. 



BRONCH'I- AL TUBES. The smaller branches of the trachea within 

 the substance of the lungs, terminating in the air-cells. 



BRONCH-I'TIS (from bronchia, and itis, a suffix signifying inflamma- 

 tion). An inflammation of the larger bronchial tubes ; a " cold" 

 affecting the lungs. 



CAL-CA'RE-OUS (L. calx, lime). Containing lime. 



CA-NAL' (L.). In the body, any tube or passage. 



CA-NINE' (L. canis, a dog). Name given to the third tooth on each 



