INDEX 



805 



AROMATIC COMPOUNDS (L. aro- 



maticus, having a spicy odor) 1)5 



ARKOU -WORM 308 



ARTERIES OF FROG, fir'terez (L. 



arteria, artery ) 53-60 



ARTERIES, SOMATIC 790 



ARTERIES, SPLANCHNIC 790 



ARTERIES, VISCERAL 790 



ARTERIOLES, arterio'ls (L. arteri- 



ola, small artery), definition of.... 799 

 ARTHROBR ANCHES, fi r'throbrfm'- 

 kez (G. arthron, a joint), defini- 

 tion of 321 



A R THRO PL EON A, ilrthrdple'ona ( G. 



arthron + pleon, full) 422 



An order of the class Collembola. 

 A R T H R P O D A, firth ro'poda ( G. 



arthron, joint + pons, foot) 



312, 374, 424 



Crayfish 312-327 



Fly . . . 367 



Grasshopper 332 



Honeybee 353 



Insects at Large 328 



Plankton 325 



Terrestrial crustaceans .... 326 



ARTICULAR PROCESSES, artik'ulfir 



(L. articulus, joint) 681 



ARTICULARE, hrtik'iilfirfi 697 



ARTICULATA, arttkfllfita 429 



ARTICULATE, artik'ulat (L. articu- 



litfi. joint) 73 



ARTIFACT, ar'tifakt (L. ars, ' art + 



facere, to make) ; ,7,75 



An artificial product. 



ARTIFICIAL FERTILIZATION 205 



ARTIODACT YLA, firtiodak'tilfi ( G. 

 artios, equal + daktylos, finger).. 



'. 426, 660 



ARYTENOID, fir'ite'noid (G. arytaina, 



a pitcher ) 762 



A8CARI8 LUMBRWOIDE8, iis'karis 



(ft. an intestinal worm) 298 



A8CELLUB AQUATICU8, nsel'us (G. 



diminutive of askus, a wine skin) . .326 

 A&CIDIACEA, asidia'sea (G. askidioy. 



a wine-skin ) 424, 639 



An order of tunicates. 

 A8COMYCETE8, fts'komTse'tez (G. 

 askos, bag + mukus, a mushroom) . 



207, 209 



ASCOSPORE. fis'kospor (G. askos, bag 



4- sporos, seed ) 188 



ASCUS, as'kfis (G. askos, bladder). 



definition of /# 



A S E X IT A L REPRODUCTION IN 



VA UCTTKRIA 207 



ASTATIC LUNG-FLUKE 291 



ASPERA. fis'porA (L. aspera, rough) .149 

 AKPERGILLU8 FUMIGATU8, Hsper- 

 jil'us (L. aspergere, sprinkle), defi- 

 nition of 211 , 212 



ASPIDIUM, aspid'ium (G. aspidion, a 



little shield ) 22 // 



A species of fern. 



ASPLDOBRANCHIA, us'pidobrang'kia 

 (G. aspis, shield + branchia, gills). 421 

 A group of Gastropods. 



ASSIMILATING TISSUES, ashn'ilat- 



ing (L. ad, to + similis, like) 236 



Conversion into protoplasm of in- 

 gested nutrient material. 



ASSIMILATION 30, 63 



ASSOCIATION MEMORY, definition 

 of 66, 178 



AST AC UN FLUVIATALIS, fis'takus 

 (G. a crayfish) 313 



ASTEROIDEA, asteroi'dea (G. aste- 



roeides, star-like) 420, 428 



An order of Echinoderms, the Star- 

 fishes. 



ASTRAGALUS, asstrag'alus (G. an 

 ankle bone) ?#, 709 



ATAVISM, at'fivlzm (L. atavus, ances- 

 tor) 



Reversion to an ancestral type. 

 Recurrence of a characteristic of a 

 remote ancestor. 



ATHECAE, athe'ke (G. without a 

 carapace) , definition of 652 



ATLAS (G. atlas, a giant) 72, 684 



ATRIAL, a' trial (L. atrium, a central 

 room ) , definition of 530 



ATRIOPORE, a'triopore (L. atrium + 



poru^t, channel ) 752 



The opening from the atrial cavity 

 to the exterior in Cephalopods. 



ATRIO-VENTRICULAR CANAL, defi- 

 nition of 530 



ATRIUM, ay'treeum (L. a court) 



Of Amphioxus 752 



Of heart 773 



Of lungs 765 



Of nose 871 



ATROPHY, at'rofi (G. a, without, 



trephein, to nourish) 316 



ATTRACTION SPHERE, definition of 90 

 AUDITORY, aw'ditoery (L. auditorius, 



pertaining to hearing) 68 



AUDITORY CAPSULES 540 



Organs of insect 337 



Pits .^480 



Placodes 480 



Sac 575, 581 



Tube 869 



AUERBACH'S PLEXUS 87.9 



AURICLE, aw'reekal (L. auricula, a 



little ear ) 55, 778 



AUTOGENOUS, oto'jenus (G. autos, 



self -j- (*en,esis. birth), definition of. 140 

 AUTOMATIC MUSCLES, definition of 112 

 AUTOSTYLIC, ot'Osti'lik (G. autos, 

 self + stylos, pillar), definition of. 698 



