GLOSSARY 437 



Casein (ka'se-iri) (Lat. caseus, cheese), the part of the albumin of 

 milk which forms the curd or clabber. In cow's milk nearly all 

 the albumin is casein. The remaining albumin coagulates and 

 forms a scum when the milk is heated. 



Cat'a-ract (Gr. kata, down, and rhegnunai, to break), a cloudiness of 

 the lens of the eye which shuts out the light. 



Catarrh (katar 1 ) (Gr. kata, down, and rhein, to flow), an excessive 

 production of mucus from the nose and throat. 



Cells (Lat. cella, a cavity), the smallest particles of the body capable of 

 fulfilling the tests of life. 



Cellu-lose (Lat. cellula, a little cell), a substance which forms most of 

 the framework of vegetable tissues. 



Ce-ment' (Lat. caementum, a builder's stone), the soft bone-like sub- 

 stance which fixes the teeth in their sockets in the jaws. 



Cer-e-bel'lum (Lat. cerebellum, little brain), the rounded part of the 

 brain situated under the cerebrum and above the medulla. It 

 assists the brain to direct precise movements, as movements ii> 

 which the body is balanced. 



Cer'e-brum (Lat. cerebrum, brain), the uppermost part of the brain. 

 In man it covers all the rest. It is the seat of consciousness and 

 of thought. It receives all sensations, and sends all voluntary im- 

 pulses to produce motion. 



Chem/is-try, the science of the composition of substances. It is 

 concerned in destroying or decomposing substances, and in form- 

 ing new substances having different properties from the original 

 substances. 



Chlo'ral (klo'ral), a substance made from chlorine and alcohol and used 

 to produce sleep. 



Chlo'ride (klo'ride), a combination of the gas chlorine with another 

 substance. Chloride of lime is used to kill disease germs. Chlo- 

 ride of sodium is common salt. 



Chlo'ro-form, a volatile liquid made from chlorine and /0r;//y/. When 

 its vapor is inhaled for some minutes it produces a deep sleep and 

 complete insensibility to pain. When its inhalation is stopped,, 

 consciousness soon returns. It is used in surgical operations. 



Chlo'ro-phyll (Gr. chloros, green, and phullon, leaf), the green coloring 

 matter of leaves. It forms starch out of carbonic acid and water. 



Chol'e-ra (Gr. chole, bile), a contagious disease of the intestine in which 

 there is great pain, and an increased excretion and peristalsis. 



