INDEX 



935 



OK.V.YUK BLOSSOM '..'i> 



OHAXG-UTAX. drang'otan (Malay, 



orany. man -f titan, woods) 660 



ORBICULAR] S MUSCLES, orbik'u- 



laris (L. orbits, an orb) 832 



ORBITAL GLAND, or'bital (L. orbita, 



circuit.) 742 



ORDERS IN LIVING THINGS 415 



ORGAN (L. organnni. an implement). 40 



Balancing 323 



Of equilibrium 323 



Floral ?.'/.? 



ORGANIC, definition of 04 



Pertaining to living organisms. 



ORGANIISM, definition of 108. 1J! 



ORIGIN OF MUSOLE. 78 



Of species 403 



ORNITHOLOGIST, Or'nithol'ojist (G. 



ornis, bird -4- logos, discourse) 418 



A student of birds. 



O K N I T HORHYNCHIDAE, or'nitho- 

 ring'kide (G. ornis, bird -4- rugxus, 



beak ) 657 



ORNITHORU YNGHV8 A NA TI A I T 8.. 65<> 

 ORTHOGENESIS, or'thojen'esis (G. 

 orthos, straight; genesis, descent), 



definition of 404 



ORTHO A ECTIDAE, or'thdnek'tiday 

 (G. orthos, straight -4- nektys, dead 



body ) 306 



ORTHOPTERA, orthop'tera (G. orthos, 



straight; pteron, wing) 334, 423 



An order of Ortlwptcroidea. 

 ORTHOPTEROIDEA , orthop'teroid'ea.423 



A subclass of Pterygogc-tiea. 

 OS CLOACAE, Os kloa'ka (L. cloaca. 



a sewer ) 706 



Entoglossum, entoglos'sum (G. 



entos, within; glossa, tongue) . .740 

 OSMOSIS, osmo'sls (G. otheiii. to 



push) 37 



OSSICLES., os'sicles (L. diiuin. of os, 



bone) 318 



OSSIFICATION, os'sifika'shiin (L. os 



4- fio, to become) 74 



Centers .-7/7 



OSTARIOPHYSI, ostii'riofl'si (G. 

 ostarion, a little l>one -4- phusa. 



bladder) 643 



OSTEOBLASTS, ds'teoblasts (G. osteon. 



bone -4- blastos, a bud) 1 1'2 



Primitive bone cells. 

 O8TEOLEPIDA, osteolep'idfi ( G . 



osteon + lepis, a scale) 642 



OSTIA, ostia (L. ostium, a door) 339 



OSTIUM OF OVIDUCT W 



Tubae ( L. tuba,, a horn ) 824 



Tubae abdominale 808 



O8TRACODA, ostrakd'da (G. ostrako- 



das, like a shell ) 42 1 



A sub-class of Crustacea. 



ONTKACOLtKKMI, os'trakoder'mi (G. 



ostrakodei'mos, bony skin) 64G 



OTIC, d'tik (G. ous, ear) 73 



OTOCYST, o'tosist (G. kystis, bladder) 



definition of 323, 581 



OTOLITHS, otoliths (G. ous, ear + 



lithos, stone), definition of 868 



OVARIAL CORDS, ovar'ial (L. ova- 



rium, an ovary ) 520 



OVAR1OLES, ovar'iols ( L. ovarium) , 



lefinition of 344 



OVARY, dvari (L. ovarium} 47 



OVEHTON 20(i 



OVIDUCTS, 6'vidukts (L. or-um, egg 



+ duco, to lead) 47, SO 



OVIPOSITOR, d'vipoz'itor (L. ovum, 



egg H- pono, to place) 337 



OVULE, ov'nle (L. dim. of ovum, egg) 



226, 2J2 



OVUL1FEROUS, ovuli'ferus (L. ovum, 



egg + fero, to bear ) 23'.) 



OVUM AS USED IN MAMMALIAN 



EMBRYOLOGY (G. oon, egg) 624 



OWEN 380 



OXIDATION, oksida'shun (G. oxys, 



acid) 30, 38, 12i> 



OXYTRICHA, oksit'rika (G. oksus, 



sharp -j- trix, hair ) 1 54 



OXYURI8 INCOGNITA, oksiu'ris (G. 



oksus -f- our a, tail) 30 L 



fncognitus, unknown. 



Vermicularis (L. vermis, a worm ).$()[ 



1 ACINI AX CORPUSCLE, jifi.sTn'Ian 

 cor'pusl (L. corpusculus, a small 

 body) 86} 



PADDLE FISHES fifrt 



PAD, SUBARTICULAR. suh'artik'ular 

 (L. sub, below -f artioulus, joint) . . 4(> 



PAEDOGENESIS, pe'dogen'esis (G. 



pais, child; genesis, descent) 



'. 345, 648, 100 



PALAEENCEPHALON, pa'leensef 'a - 

 Ion (G. palaios. ancient -f- en, within 

 -f- keplialos. head, i.e., primitive 

 brain ) 85f> 



PALAEMON, pnlo'mon (G. palaimon, 

 a sea god ) 32.", 



PALAEONTOLOGY, pa'leontdl'ogy (G. 

 palaios, ancient + ons, being + 



logos, discourse) 32, 393-401 



Chart 394, 395 



PALAEOSPONDYLI DAE, paleospondi'- 

 liday (G. palaios, ancient + spondu- 

 los, vertebra ) 4fi 



PALAEOTHALAMUS, pa'ledthal'amus 

 (G. palaios, ancient 4- thalamos, a 

 receptacle) 851 



PALAEOZOIC, pa'leozo'ik (G. palaios, 

 ancient; zoon, animal) S95 



PALAMEDEIDAE, pal'amede'ide (G. 

 paints, palm-webbing of foot) . . . 719 



