INDEX 755 
Dextrin, white, 82 
yellow, 82 
Dextrose, 74, 485 
Diageotropic, 36 
Dianthera, 603 
Diastase, 102, 485 
Diatoma vulgare, 350 
Diatomaceous Earth, 350 
Diatoms, 91, 348 
Fossil, 352 
Dicentra canadensis, 528 
Cucullaria, 528 
Dicotyl Plant, morphology of type, 497 | 
Dicotyl Root, histology of, 167 
of transitional and _ secondary 
growth, 169 
Dicotyl Roots, abnormal structure of, 
175 
Dicotyl Seed, 319 
histology of, 320, 321 
Dicotyl Stems, exceptional types of, 203 
structure of, 194-204 
Dicotyledonez, 479, 497 
Dicotyledons, 16, 479, 497 
development of embryo in, 295 
drug yielding, 499 
leaves of, 232, 255 
petiole of, 243 
roots of, 167 
stems of, 194, 199 
Dictyostele, 145, 199 
Dictyotales, 353 
Dicypellium caryophyllatum, 524 
Diervilla, 606 
Differentiation, 16 
Diffusion, 153 
Digestion, defined, 26, 67 
Digitalis, 163, 256, 275, 599, 600 
Digitalis Pulverata, 600 
Digitalis purpurea, 84, 600 
trichomes of, 124, 125 
var. gloxineflora, Fig. of, 601 
Digitoxin, micro-chemic test for, 84 
Dihybrids, 649 
Dioecious, 264, 418 
Dionea, 35, 530 
Submerged, 625 
Dionea muscipula, 35, 36, 625 
Dioscorea villosa, 491 
Dioscoreaceze, 491 
Dioscorides, 2, 330 
Diosma, 545 
Diplococcus, 367, 368 
Dipsacea, 608 
Disaccharoses, 74, 75 
Dissepiments, 285 
Division, by cleavage furrows, 378 
simple, defined, 28 — 
Division of labor, 16 
Docks, 283, 512 
Dodder, 161, 188, 228 
Figs. of, 162 
Dog Bane Family, 587 
Dog’s Tooth Violet, life history of, 471 
Dogwood, 256, 261 
Blood Twig, 577 
Fig. of flowering branch of, 261 
Flowering, 577 
Dogwood Family, 577 
Dorema Ammoniacum, 577 
Douglas Fir, 214, 465 
Dracena, stem of, 220 
Dracena Draco, 489 
Dragon’s Blood, 487, 489 
Draparnaldia, 338 
Drimys Winteri, 516 
Drosera, 530 
Drosera, 36, 622 
anglica, 530 
longifolia, 530 
rotundifolia, 630, 623 
Droseracee, 530 
Drupe, 305 
Fig. of, 306 
Dryopteris, 435 
Dryopteris Filix-mas, 53, 435 
alternation of generations in, 71 
comparative physiology of root, 
stem and leaf, 63 
diagram of life cycle, 72 
Fig. of, 54 
gross structure of frond, 55 
sori and sporangia, 66 
stem, 53 
histology of growing apex, 58 
mature root, 58 
pinnule, 61, 62 
‘root apex, 60 
