CXlii PROCEEDINGS OF THE ROYAL HORTICULTURAL SOCIETY. 
Delphinium ' Crofton Belle,' cxii 
' Duke of Connaught,' 40 
elatum, 40 
formosum, 40 
' Geneva,' 39 
grandifiorum, 41 
' G. R. Downer,' cxiii 
' King of Delphiniums,' 7, 
' La France,' 40 
likiangense, 41 
' Moerheimi,' 40 
' Mrs. Brunt on,' 40 
' Mrs, G. Gibson/ 40 
'Mrs. Thompson,' 40 
' Nellie,' 39 
nudicaule, 40 
aurantiacum, 41 
purpureum, 41 
Nuttalli, 41 
peloric, xcv 
' Persimmon,' 41 
Pylzowii, 42 
' Queen Mary/ 40 
' Rev. E. Lascelles,' 39, 40 
sp. from Kashmir, xcviii 
' Statuaire Rude,' 39 
' Table Ronde,' 39 
tatsiense, 40 
trolliifolium, 41 
vestitum, 41 
with :entire leaves, xcviii 
Zalil, 40 
Delphiniums, 37 
come true from seed, 39 
propagation, 38 
tried atWisley, 1917, 462, cxiii, 
cxv 
Dendrobium acuminatum, lxiii 
chrysotoxum, lxi 
Dalhousieanum, lxi 
illustre ' Florence Bartels,' A.M., 
lxi 
x illustre Bartelsianum, lxi 
nobile, 566 
Palpebrae, 554 
thyrsiflorum, 566 
Wardianum, 566 
Dennstaedtia punctilobula, its eradi- 
cation, 221 
Deschampsia caespitosa, 249 
Desfontainea, 87 
spinosa, 91 
Destructor refuse, 522 
Deutzia Rehderiana, 214 
Vilmorinae, A.M., li 
Diamond-back moth, 219 
Dianthus x Allwoodii, xxviii 
plumarius diseased, 568 
Dickson, J., on the herbaceous 
border, 1 
Dkksonia antarctica, 91 
Dierama pulcherrimum, 87 
Diervilla rosea with whorled leaves, 
xcviii 
Digitalis purpurea nudicaulis, 560 
pubescens, 560 
Diplacus glutinosus, 89 
Diplodia sp. on water melon, 580 
Dipteron burrowing in Iris leaves' ci 
Disa grandinora, 566 
Disanthus cercidif olia, 91, 554 
Disease, plant, and the vicious circle, 
309 
resistance, 561 
Dogwood, scarlet, 282 
wood leopard-moth in, 227 
Doronicum, 556 
Douglas, J., on border carnations, 43, 
Douglas fir diseases, 238, 559 
pitch moth, 219 
and frost, 557 
see Pseudotsuga 
Dracocephalum argunense, 568 
Drimys aromatica, 81, 82 
Winteri, 82 
Druery, the late Chas., xcviii, xcix, 
cxvi 
Dunes, their control, 554 
Durham, Dr. H. E., on the Lorette 
system of pruning, 261 
Dust-spraying nursery stock, 220, 555 
Dynamite, use in soil improvement, 
576 
" Early Naturalists : their Lives and 
Work, The," by L, C. Miall, re- 
viewed, 195 
Easlea, W., on mildew resistant roses, 
253 
Echinacea ' Cicely/ cxv 
' Gladys,' cxv 
Echium candicans, 555 
Pininana, 555 
plantagineum, 580 
simplex x candicans, 555 
simplex x Decaisnei, 555 
violaceum, 555 
Wildpretii, 555 
Eelworm attack upon Narcissi, 51, 
52, 53. 5&. 57> 60, 61, 65, 
228 
soil test for, 58 
treatment of bulbs affected 
by, 65 
Eelworms in black currant, 209 
Egg-plant, attacked by Sclerotinia, 
548 
Elaeocarpus, Endothia upon, 221 
Elford, P., and Heaton, S., " The 
Cultivation of Allotments," 194 
Ellis, E. T., " Jottings of a Gentleman. 
Gardener," 538 
Elm, durability of, 248 
frost damage, 557 
in autumn, 340 
wood leopard-moth, 227 
Elsholtzia Stauntonii, 220 
Embothrium coccineum, 84 
Endemism and the mutation theory, 
220 
Endothia fluens, 221 
mississippiensis, 221 
gyrosa, 221 
Fongirostris, 221 
parasitica, 221 
singularis, 221 
Enkianthus campanulatus, 81 
