Index 



451 



DENSITY 37 



DENTARY, den'tare (L. dens, tooth) . 



12, 74 



DEPRESSOR MUSCLES, depres'or (L. 



deprimere, to lower) 78 



DERMAPTERA, dermap'tera (G. 



derma, skin + pteron, wing) 425 



An order of Orthopteroidea. 

 DERMATOGEN, der'matoj en ( G. 



derma, skin; gignesthai, to produce). 229 

 DERMIS, der'mis (G. derma, skin) ... 46 

 DERMOPTERA, dermop'tera (G. 



derma, skin + pteron, wing) 428 



DERO, de'ro (G. deiro, neck) 284 



A sub-class of Oligochaeta. 



DE SAUSSURE 382 



DESCRIPTION VS. EXPLANATION. 40 

 DESSICATION (L. desiccare, to dry 



up) 148 



DEUTOMERITE, dutom'erit (G. deu- 



teros, second; meros, part) 152 



DEVELOPMENT, definition of 31 



DE VRIES, HUGO 389, 404 



DEXTROSE (L. dexter, right -f 



glukus, sweet ) 188 



DIAGNOSIS, di'agno'sis (G. dia-, 



through ; gignoskein, to know ) , cor- 

 rectness of 22 



DIASTASE, dl'astas (G. dia, through; 



histanai, to set), definition of 269 



DIASTOLE, di'as'tole (G. diastole, 



difference) 58 



DIATOM, diatom (G. dia, through; 



temnein, to cut) 125 



DI BOTH RIO CEPHALUS LATUS, 



diboth'reosef'alus 291, 302 



Same as Bothriocephalus. 

 DIBRANCHIA, dibrang'kia (G. di, 



two + branchia, gills) 423 



An order of Cephalopoda with two 



gills, two kidneys, and two auricles. 



Shell enveloped by a mantle. 

 DICELLURA, disel'ura (G. dis + 



kulus, hollow) 425 



An order of Campodeoidea. 

 DICOTOPHYME RENALE (G. diko- 



tyledon + phyme, to grow in the 



body) 307 



DICOTYLEDON, dikotile'don (G. di, 



two; kotyledon, cup-shaped hollow) .228 

 DICYEMA PARADOXUM, disi'ema 



(G. dis, twice + kyema, embryo).. 308 

 DICYEMIDAE, disiem'ide (G. di, two 



+ kyema, embryo) 307 



DIDELPHIA, didel'fia (G. di, two + 



delphis, womb ) 428, 434 



Definition of 434 



DIDINIUM, di'dinium U f 



DIFFERENTIATION, dif'eren'shia- 



shun (L. differe, to differ) 



Anterior-posterior 266 



Dorso-ventral 266 



DIFFLUGIA, difloo'ji'a (L. diffluere, 



to flow apart ) 1^9 



A genus of Rhizopods. 

 DIFFUSION (L. dis, apart; fundere, 



to pour ) 37,38 



Becoming widely spread. 

 DIGENEA, dijen'ea (G. di, two + 



genes, sexes ) 422 



Trematoda which pass through 



several different stages in their life 



history. 

 DIGENETIC, dijenet'ik (G. dis, twice; 



gignesthai, to produce) 288 



DIGESTION, dijes'chun (L. digestio, 



digestion ) 30, 63 



DIGESTIVE CANAL 47 



Glands 50 



System 47 



DIGIT, dij'ft (L. digitus, finger) 45 



DIGITATUM, dij'itatum (L. digitatus, 



having fingers or toes ) 251 



Applied to leaves with finger-like 



divisions or processes. 

 DIMORPHIC, dimor'fic (G. Ms, twice; 



morphe, form) 256 



DINOFLAGELLATA, dinofla'jelata (G. 



dinos, a round area, + L. flagellum, 



a whip) 152,421 



An order of Mastigophora. 

 DINORNITHIFORMES, dln6rnithif6r'- 



mez (G. deinos, terrible, + ornis, 



bird + forma, form ) 428 



An order of extinct Aves, that 



were flightless, with enormous hind 



limbs, and no wing bones. The Moas. 

 DIOECIOUS, die'shus (G. dis, twice + 



oikia, house) 217 



DIOSCORIDES, dioskoridez (Name of 



Greek physician) 377 



DIPLOBLASTIC, dlp'loblas'tic (G. 



diploos, double; blastos, bud); con- 

 sisting of two germ-layers 248 



D1PLOCOCCI, diplokok'si (G. diploos, 



double + kokkos, berry) 191 



DIPLOGLOSSATA, diploglSsa'ta (G. 



diploos, double + glossa, tongue) . . .425 

 An order of Orthopteroidea. 

 DIPLOID, dip'loid (G. diploos, double . 



+ eidos) , definition of 101 



DIPLOPODA, diplop'oda (G. diploos, 



double + pous, foot) 424 



An order of Proqoncria. 

 DIPNEUSTI, dipnus'ti (G. di, two 



pneustos + pnein. to breathe) 427 



DIPNOI, dip'noi (L. dipnous, double 



breathing) 427 



DIPTERA, dip'tera (G. dis, twice; 



pteron, wing) 331, 3^,6, 426 



