COffCHOLOG? 



83 



CONODONTS 



Conchology, (kong-kol'o-ji). [Gk. kogche, shell; 

 logos, discourse.] The science of the struc- 

 ture and classification of shell-bearing ani- 

 mals. ' 



Concrete, (konTcret). [L. concretus, stiffened.] 

 A mixture of gravel, pebbles, or broken 

 stones with cement. 



Concrete science. That which treats of pheno- 

 mena known to us in their totalities, as in. 

 Astronomy, Geology, Biology, &c.', by the 

 redistribution of matter and motion. 



Condenser, (kon-den'ser). [L. condenso, I 

 thicken.] 1. An apparatus for collecting or 

 condensing electricity. 2. An apparatus for 

 condensing vapours into liquids. 



Condor, (kon'dor). [From cuntur, the Peru- 

 vian name.] = Sarcor- 

 amphus gryphus : a 

 large vulture, found on 

 lofty mountains in S. 

 America. 



Conduction, (kon-duk'- 

 shun). [L. conduco, I 

 bring together.] The 

 passage of heat, elec- 

 tricity <fec., through 

 matter by its transfer 

 from particle to par- 

 ticle. 



Conductors of heat and 

 electricity. Metals, 

 charcoal, water, animal and vegetable sub- 

 stance, <fec., metals being by far the best. 



Condyle, (kon'dil). [Gk. kondylos, knuckle.] 

 The articulating surface of a bone, used 

 specially of the bony projection by which 

 the skull is attached to the vertebral column. 



Condy's fluid. A solution of manganate of 

 sodium which disinfects by the oxidation of 

 putrid matter. 



Cone, (kon). [Conus, the Latin name.] 1. A 

 regularly tapering figure having a circular 

 base and a pointed summit. 2. A general 

 term for such fruits as those of the pine 

 tree, which have somewhat conical forms. 



Confervacese, (kon-fer-va'se-e). [L. conferveo, 

 I unite with. ]= Confervas : aquatic threads 

 or membranes, reproduced by internal spores, 

 belonging to Algales ; algae bearing thelicheiis 

 Ccenogonium and Cystocoleus. 



Congelation, (kon-je-la'shun). [L. congelo, I 

 freeze.] The conversion of a liquid into a 

 solid by freezing. 



Conger, (kong'ger). [The Latin name.] = 

 Muraena conger=Anguilla conger : a large 

 marine eel from 5 to 10 feet long. 



Congestion, (kon-jest'yun). [L. congestlo, a 

 heaping together.] An undue distension of 

 the blood-vessels, &c., causing accumulation 

 of blood. 



Conglomerate, (kon-glom'er-at). [L. conglo- 

 mero, I entangle.]=Pudding-stone=Pebbly 

 sandstone : gravel cemented into solid rock 

 := Agglomerate, of which the fragments have 

 been rounded by action of water. 



Congo=Mycetes palliatus, q.v. C. snake= 

 Amphiuma, q.v. 



Congos, An African people. 



Conia, (ko'ni-a). [Conium ? g"f.]= 



CgHi5N=Coniine : a natural base found in 

 the hemlock ; a transparent oily liquid= 

 Imide of conyl : one of the secondary naona- 

 mines. 



Conic, (kon'ik). [Cone, q.v.] C. sections : the 

 circle, the ellipse, the hyperbola, and the par- 

 abola: curves formed by the intersection of a 

 plane and a cone. C. nodes : a mathematical 

 term occurring in calculations respecting 

 cubic surfaces, represented by a common apex 

 of two cones. 



Conidia, (kon-id'i-a). [Gk. konis t dust.] The 

 propagating buds of mildew, in the form of 

 minute spores. 



Coniferse, (ko-nife-re). [Cone, q.v. ; L. fero, 

 I bear.]=Pinaces8 : trees, such as the pine 

 and fir, with resinous timber and conical- 

 shaped fruit, forming a division of Gymno- 

 spermous Exogens, common in temperate and 

 cold countries ; none in tropical America. 



Coniine, (ko'ni-in). [Conium, g.r.]=Conia, 

 g.v.rrCgHisN : a base found in hemlock. 



Coniomycetes, (kon-i-o-mi-se'tez). [Gk. konis, 

 dust; mykes, mushroom.] Blights: a pri- 

 mary division of Fungales ; minute parasitic 

 plants. 



Conirostres, ( kS-ni-rost'rez ). [Cone, q.v. ; 

 rostrum, snout.] A division of Insessores, 

 marked by a strong conical beak. 



Conium, (ko'ni-um). [Koneion, the Greek 

 name.] = Hemlock : a plant belonging to 

 Apiaceae. 



Conjugate, (kon'joo-gilt). [L. conjugo, I con- 

 nect.] C. axes: in analytical geometry, two 

 axes that are so related as to be interchange- 

 able. C. mirrors : two mirrors placed face 

 to face, so that each reflects rays of light or 

 heat to the other. C. compounds : chemical 

 compounds in which the union is so intimate 

 that the constituents are not always to be 

 detected by the ordinary tests ; also called 

 copulated compounds. 



Conjugation, (kon-joo-ga'shun). [L. conju- 

 gatio, mixture.] A modified form of sexual 

 union observable in plants and in Infusoria. 



Conjunction, (kon-jungk'slmn). [Conjunctio, 

 the Latin word.] When three heavenly 

 bodies are in a straight line they are said to 

 be in conjunction. Superior conjunction is 

 when an inferior planet is in a line with the 

 earth and the sun, the sun being between, 

 the others. Inferior conjunction is when 

 the inferior planet is in aline with the 

 earth and sun, and also between them A 

 superior planet is in conjunction when it is 

 in the same line as the earth with the sun 

 between them. 



Conjunctiva, (kon-jungk-ti'va). A membrane 

 lining the eyelids and covering the eyeball. 



Connaraceae, (kon-na-ra'se-e). [Konnaros, the 

 Greek name.]=Conuarads : trees and shrubs, 

 chiefly American, with, compound leaves, 

 belonging to Rutales. 



Connective tissue. A filamentous gelatinous 

 substance forming the chief portion of the 

 derrnis; also called fibrous tissue, areolar 

 tissue, and cellular tissue. 



Conodonts, (kon'o-donts). [Conoid, q.v.; Gk. 

 odous, tooth.] Lower Silurian fossils: small 



