8i4 



INDEX 



Dactyus, 541, ^t;!. 

 Daffodil, 329. 

 Dahlia, 29, 162, 268, 470. 

 Daisy, 70, 85, 91, 280, 607. 



ox-eye (Figs. 147, 199), 607. 



Damping-off, 693 (Fig. 232). 



Damson, 399. 



Dandelion, 85, 91, loi (Fig. 148). 



Darnel, 550. 



Dates, 99, 229. 



DaucuSj 312, 444. 



Deadly nightshade, 468. 



Dead-nettle, z8o (Fig. 102), 327. 



Decay, 788. 



Deferred shoots, 50. 



Definite, 41 (Figs. 15, 22). 



Definite inflorescences, 89, 92, 93. 



Definitive nucleus, 273 (Fig. 99). 



Degeneration of varieties, 317. 



Dehiscent fruits, 97. 



Denitrification, 792. 



Dentate, 70. 



Derivative hybrids, 289. 



Dermatogen, 149 (Figs. 76, 77, 100). 



Dcschampsia 537, 552. 



Dextrin, 158, 228. 



Dextrose, 155. 



Diadelphous, 85, 411. 



Diageotropism, 255. 



Diaheliotropism, 254. 



Diantkus, 287, 326. 



Diarch, 142, 



Diastase, 156, 158, 220, 228. 



Dicbasium, 93. 



Dichogamous, 280. 



Diclinous, 8 x— - ^ 



Dicotyledons, i8,'bgp*fj 3^ 



Digitalis, 287, 327. 



Dinkel, 518. 



Dioecious, 87, 88. 



Diplococci (Fig. 261). 



Diseases of animals, 803. 



Disinfectants, 778. 



Disk floret, 470 (Fig. 147). 



Dissepiniants, 86 (Fig. 38). 



Dispersal of seeds, 100. 



Divergence, 75. 



Division of cells, no (Fig. 52). 



Divisions, 322. 



Docks, 51, 102, 281, 326, 601, 650, 667 



(Fig. 199). 

 Dodder, 171, 208, 598. 

 Dog-rose, 65, 404. 

 Dogstail, crested, 540, 553, 669 (Figs 



179. 2iS)- 

 Dogwood, 61. 



Dominant character, 290. 

 Dormant buds, 50. 

 Dorsal suture, 85 (Fig. 37). 

 Double fertilisation, 274. 



flowers, 80, 288. 



Dove's-foot cranesbill, 572 (Fig. 199), 



649. 

 Drumhead cabbage, 368, 369, 

 Drupe, 99 (Fig. 124). 

 Drupels, 99, 403- 

 Dry-rot of potatoes, 708. 

 Duke cherry, 264, 400. 

 Dun oat, 497. 

 Duramen, 127. 

 Duration of grasses, 556. 



of plants, 5. 



of weeds, 577. 



Durmast oak, 66. 

 Dutch clover, 425, 653. 

 Dutch pea, 415. 

 Dwarf cherry, (yj, 264, 400. 



thistle, 609. 



wheat, 519-521 (Fig. 168). 



Dyers' Greenweed, 437, 606. 



Ear, 515. 



Early Hobbs' hops, 341. 



Eaver, 549, 675. 



Egg-apparatus, 273. 



Egg-cell, 273 (Figs. 99, 100, loi). 



Elder, 62. 



Elements, essential, 169, 171. 



in plants, 168. 



Elliptical, 70. 



Elm, 41, 63, 97, 102, 124, iz8 (Fig. 66), 



136. 

 Elymus, 553. 

 Emarginate, 71. 

 Emasculation, 301. 

 Embryo, 9, 274-277 (Figs. 2, 5, 100, 



loi). 



cell, 275 (Fig. ico). 



sac, 271 (Figs. 98, 99, loi). 



Emmer, 518. 

 Emulsin, 231, 398- 

 Endocarp, 99, 398 (Fig. 124). 

 Endodermis, 116 (Figs. 54, 60, 72), 



141. 

 Endogenous, 27. 

 Endophytic, 684. 

 Endosperm, 18, 278. 

 Endospermou^ 18 (Fig. loi). 

 Endospore, 680 (Fig. 230). 

 English oak, 60. 



wheat, 519. 



Entire, 70. 



