924 



INDEX 



Excretory system 359 



Gynandromorphs 366 



Metamorphosis 362 



Muscular system 360 



Paedogenesis 345 



Parasitic forms 372 



Polyembryony 345 



Senses of 341 



Sympathetic nervous system 359 



Vermin 350 



IN8ECTIVORA, m'sektiv'Ora (L. in- 



sectus + vorare, to devour) . . .426, 658 

 INSERTION, OF MUSCLES, mser'shun 



(L. in$ertus, joined) 78 



INSPIRATION, mspira'shun (L. in- 



spirare, to inhale) 30 



INSTARS, m'starz (L. instar, form). 330 

 INSTINCT, in'stingt (L. instinctus, 



impulse) 126 



INSTINCTS, definition of 177 



INSTRUCTION, instruk'shon (L. in- 



struere, to build ) 32 



IN8ULA, in'sula (L. insula, island).. 843 

 INTEGUMENT, integ'ument (L. 

 intego, to cover), component parts 



of 665 



INTELLIGENCE, intel'ijens (L. intel- 

 ligentia, discernment), definition of. 182 



iNTERACTiONisT, definition of 175 



INTERAURICULAR SEPTUM, in'ter- 

 orik'ulnr (L. inter, between + 

 auricula, little ear + septum, parti- 

 tion) 541 



INTERBRANCHIAL SEPTUM, m'ter- 

 brang'kifil (L. inter + (* branchia, 



gills) 758 



INTERCOSTAL ARTERIES, m'terkos'- 



tal (L. inter + costa, rib) 791 



INTERMAXILLARY GLANDS (L. 



maxilla-, jaw ) 741 



INTERMEDIATE CELL MASS (L. 



medius, middle) . 593 



INTERMEDIATE MASS OF BRAIN, 



definition of 863 



INTERMEDIATE ORGANISMS. . 185, 193 



Bacteria 190 



Yeasts 188 



INTERMEDIUM 76 



INTERNAL CAPSULE OF BRAIN, 



definition of 849 



INTERNAL GILLS 586 



INTERNAL SECRETIONS 52 



INTERNAL SECRETIONS, glands of. 52 



INTERNAL STRUCTURE 46 



INTERNASAL GLANDS (L, nasus, 



nose) . .741 



Plate, definition of 613 



INTERNODE (L. nodus, knot) 203 



INTERORBITAL SEPTUM (L. orUs, 



circle) , definition of 540 



INTEROSSEOUS (L. os, bone) 85 



INTERPRETATIONS VS. FACTS.. . 32 



Of facts 157 



INTERRENAL (L. renes, kidneys), 



definition of 822 



INTERRENAL VEINS 798 



INTERSEGMENTAL 602 



INTERSTITIAL, stish'al (L. sistere, 



to set) 248 



INTERSTITIAL CELL 819 



INTESTINAL LAYERS 49 



INTESTINE, CROSS SECTION OF, 



intes'tin (L. intestinus, inside).... W 



INTRALIMBRICUS 844 



INTRINSIC MUSCLES, mtrm'sik (L. 



intrinsecus, inwards ) 829 



I N T R S PECTIONISTS, intrdspek'- 



shonists (L. introspectare, to look 



into) , definition of 173 



INTUSSUSCEPTION, m'tussusep'shun 



(L. intus, within -f- suscipere, to re- 

 ceive ) . 



In Zoology, growth from within 



outwards ; in Medicine, one portion 



of the intestine being pushed into 



another portion. 

 INVAGINATE, mvaj'inet (L. in, into 



+ vagina, sheath ) 259 



INVAGINATION, innvaj'inay'shun (L. 



in, in; vagina, sheath), definition of. 106 



INVENTORS VS. SCIENTISTS 25 



INVERSION, OF GERM LAYERS, in- 



ver'shon (L. invertere, to turn 



about) C>23 



INVERTEBRATES, mver'tebrats (L. 



in, not -f- vertebra, joint) 



Of uncertain position 431 



INVOLUTION, m'volu'shun (L. in- 



volvere, to roll up) 557 



IRIS, eye'riss (G. rainbow), definition 



of 70 



Of eye 873 



IRRITABILITY, Ir'itabinti (L. irri- 



tare, to provoke) 65 



ISCHIADIC ARTERY, is'klfid'ik (G. 



ischion, hip ) 792 



ISCHIOPODITE, la'kiop'odlt ( G. 



ischion -f- pous, foot) 31 'i 



ISCHIUM, is'keum (G. ischion, hip)..7tf 



Homologue 704 



I8HNOP8YLLUS 350 



ISLE, ISLET, OR ISLAND OF REIL.843 

 ISOETALES, fern allies, Tsoetfi'le/ (G. 



isoetes, equal in years) 22-'i 



I80POD, I'sopod (G. isos, equal + 



pous) 316 



ISOPODA , definition of 326 



I80PTERA, IsOp'tera (G. isos + 



pteron, wing) 423 



ISTHMUS, OF BRAIN, is'mds (G. 



isthmos, neck), definition of 845 



Of oviduct //.'/0 



Of pharynx 759 



Rhombencephali 839 



