INEDUCABILIA 



182 



INSECTA 



Ineducabilia, (in-ed-u-ka-bil'i-a). A primary 

 division of Vertebrata. o. Bonaparte s classi- 

 fication. 



Inertia, (in-er'shi-a). [The Latin word.]=The 

 property of matter to move or remain at 

 rest according as it is acted on by external 

 forces, which it has no innate power to 

 oppose. 



Infection, (in-fek'shun). [L. inficio, I taint.] 



Communication of disease, without contact, 



through the medium of the air, distinct from 



contagion, which is caused by contact, 



Inferior Oolite. A bed of calcareous stone and 



shales; the lowest bed of the Oolite, q.v. 

 Inferobranchiata, (in-fer-o-brang-ki-a'ta). A 

 sub-division of Gasteropoda, named from the 

 inferior position of the branchias. 

 Infiltration, (in-fil-tru'shiin). One method of 

 fossil formation: in which the pores of an 

 organic body are gradually filled by car- 

 bonate of lime, or some other mineral, so 

 that the form and character is preserved. 

 Inflammable minerals : Sulphur, Coal, Naph- 

 tha, Petroleum, Asphalt, Graphite, Diamond, 

 &c. y. Minerals. 



Inflection, (in-ttek'shun). [L. inflecto, I bend.] 

 Bending, as of a ray of light, sound, heat, 

 &c. 



Inflorescence, (in-flo-res'sens). [L. floresco, I 

 begin to flower.] The manner of arrange- 

 ment of the flowers of plants. Classification, 

 off. 



Spike- 

 Catkin. 

 Spadix. 

 Baceine 



Corymb. 



Panicle. 



Head or Capitulum 



Umbel. 

 Cyme. 



Infundibuluin, (in-fun-dib'ii-lum). [The Latin 

 word.] Funnel: any funnel-like process, 

 such as the channel by which the mollusca 

 discharge water from their branchial cham- 

 bers. /. of brain: a small process of the gray 

 matter of the brain. /. of ethmoid: a canal. 

 /. of ear: the termination of the cochlea. 

 /. of heart: a conical prolongation from 

 which the pulmonary artery proceeds. 

 Infusoria, ( in-f u-so'ri-a ). .[L. infusum, in- 

 fusion. ] A division of Protozoa: microscopic 

 animals, usually found in vegetable infusions, 

 of which Paramoecium is the type; also con- 

 sidered to be a primary division of the ani- 

 tuul kingdom, chiefly because of the peculiar 

 nature of their reproductive organs; have 

 homogenous gelatinous diaphanous bodies, 

 and swim by means of cilia. Classification 

 of I. by Ehi'enberg 



Polygastrica 

 Astoma. 

 Stomatoda. 

 Rhizopoda. 

 Rotifera. 



Ingesta, (in-jes'ta). [L. ingero, 1 carry in.] 

 A collective term for all that enters; used 

 as Food. 

 Ingrassias, (in-gras'si-as). [Signor L, an Italian 



physician.] Processes of 7.=Lesser wings of 

 sphenoid. 



Inguen,(ing'gwen). [The Latin name.]=Groin: 

 the lower part of the abdomen. 



Inguinal, (ing'gwin-al). [Inguen, q.v.] Con- 

 nected with or related to the groin. /. canal 

 ^Spermatic canal. 



Inheritance, ( in-herl-tans ) = Transmission 

 from parent to child. Abridged L : the imper- 

 fect succession of developments which take 

 place in the embryos of higher animals; in 

 which some stages appear to be omitted. 

 Amphigonous I.: dual transmission; in- 

 heritance of qualities from both parents. 

 Homochronous I. =Conternporaneous trans- 

 mission : shown by the stages of development 

 occurring in the offspring at the like times 

 as in the parent. Homotopic I.: shown by 

 the development of similar features and 

 peculiarities of person in offspring as in 

 parent. 



Ink, Indian T.=CJiina L: made from a black 

 liquid obtained from the Loligo; also a com- 

 pound of camphor and gelatin. Printer's I.: 

 a compound of finely divided carbon and 

 oil. Sympathetic I.: visible only when dried 

 1>y heat, otherwise invisible from absorbed 

 moisture. 



Innervation, (in-ner-vii'shun). [Nerve, q.v.] 

 The function of the nervous system, q.v. 



Innominate, (in-nom'i-nat). [L. innominatum, 

 unnamed.] /. artery: goes from aorta to 

 right side of head and right arm; divides 

 into carotid and subclavian arteries. /. 

 &<me=Haunch bone: in lower animals, throe 

 distinct bones, ilium, pubis, and ischium. 

 /. vein: formed by the union of the jugular 

 and subclavian veins. The two I. veins 

 continue to form the superior vena-cava. 



Inoceramus, (i-no-ser'a-mus). [Gk. is, fibre; 

 keramos, tile.] A bivalve mollusc, many 

 species of which are found in Cretaceous 

 rocks. 



Inoculation, (in-ok-u-la'shun). [L. inoculo, I 

 graft.] 1. Used generally for any method 

 of grafting by the insertion of buds. 2. A 

 method of mitigating the danger of small- 

 pox by inducing a mild form of it: super- 

 ceded by Vaccination, q.v. 



Inophvta, (in-ofi-ta). [Gk. is, fibre; phytos, 

 planted. ]=Thread plants, lichens, and fungi; 

 a sub-division of Tnallopnytes, q.v. 



Inosic acid, (i-no'sik). [Gk. is, fibre. ]= 

 CgHgNoOg: an acid obtained from flesh; ob- 

 tained in preparing creatine. 



Inosin, (i-no'sin). [Gk. is, nmscle.]=C 6 H]oO<} 

 2H.2O=Inosite=Muscle sugar: a crystalline- 

 substance obtained from muscle. 



Insalivation, (in-sal-i-va/shun). [Saliva, q.v.] 

 The action of the salivary fluid on food. 



Insect, (in'sekt). [Insectum, the Latin name.] 

 An animal with a head, mouth, eyes, and 

 usually wings, six legs, and the body in 

 segments, more or less consolidated, with 

 a hard integument; belonging to Arthrc- 

 poda. 



Insecta, (in-sek'ta). [The Latin name. ]= 

 Hexapoda, Insects: a division of Annulosa. 

 v. Insect. 



