68 GLOSSARY. 



Innerva'tion (L. in, into ; nervus, a nerve). The distribution 



of nerves to an animal or to a region of the body. 

 Insaliva'tion (L. in, in ; saliva, spittle). The process of 



mixing the food with the saliva, 

 Insecti'vora (L. vow, I devour). -A group of mammals living 



mainly upon insects. 

 Inser'tion (L. insertio, an engrafting upon). The point by 



which a muscle is attached to the part to be moved. 

 Inses'sores (L. in, on or in ; sessor^ one who sits). According 



to the old system of classification, an order of birds which 



comprised the crows, swifts, woodpeckers, and cuckoos. 

 Inspira'tion (L. insplro, I breathe in). The act of taking in air. 

 Inspis'sation (L. spissare, to thicken). The thickening of a 



fluid by the evaporation of moisture, as in the juices of 



plants. 

 Integropal'liate (L. integer, whole, entire ; pallium, a mantle). 



A term applied to those Lamellibranchs which have the 



pallial line unbroken by notches. 

 Inte'gument (L. integumentum, a covering). The external 



protective covering of a plant or animal. 

 Intercellular (L. inter, between ; cella, a cell). The spaces 



or material between or among cells. 

 Inter clavi'cula (L. inter, between; davicula, the collar-bone). 



A median membrane bone developed in many Vertebrata 



between the clavicles, (called also the epi sternum.) 

 Intercos'tal (L. inter, between; costa, a rib). Between the 



ribs, as the intercostal muscles. 

 Intercru/ral (L. inter, between). A term applied to the added 



neural arches of the vertebrae when more than one is 



formed to each vertebra. 



Interlo'bular (L. inter, between). Between the lobules; ap- 

 plied specially to the small branches of the portal vein 



which go between and surround the lobules of the liver. 

 Interme'dium (L. intermedius, intermediate). One of the 



bones of the carpus, also termed Centrale. 

 Intermesente'ric chambers (L. inter, between). The divisions 



of the somatic cavity in the Actinozoa, which are between 



the mesenteries. 

 In'ternode (L. inter, between ; nodiis, a knot). The interval 



between two successive nodes in the stem of a plant. 



