Oct. 7-Dec. 30, 1918 



Index 



671 



Cuciunber — 



squirting. See Momordica elaterium. 

 wild. See Echinocystis lobaia. 

 See CucuTnis sativus. 

 Cucumis — 



acuiangulis, host plant of Bacterium lach- 



Tymans 



anguria, host plant of Bacterium lach- 



Page 



206 



206 



Page 



rytnans 



dipsaceus, host plant of Bacterium lack- 



rytnans 



grosstdariaeformis, free from attacks of Bac- 

 terium lachrymans 206 



mdo — 



free from attacks of Bacterium lachrymans 20& 

 var. dudaim, free from attacks of Bac- 

 terium lachrymans 2°6 



var. flexuosus, free from attacks of Bac- 

 terium lachrymans 206 



sativus, host plant of Bacterium lachrymans. 206 

 Cucurbita — 



maxima, free from attacks of Bacterium 



lachrymans 2°^ 



moschata, free from attacks of Bacterium 



lachrym.ans *°^ 



pepo — 

 free from attacks of Bacterium lachrymans 206 

 var. condensa, free from attacks of Bac- 

 terium lachrymans 206 



var. ovifera, free from attacks of Bacterium 



lachrymans ^°^ 



Cuprous oxid in intumescences on frozen 



leaves ^^ 



Cyanid — 



potassium, tolerance of larvae of Trichinella 



spiralis to 477-479 



sodium — 



effect on cattleya orchids 267-268 



used to generate hydrocyanic-acid gas . . . 134 

 Dactylis gloTnerata — 



food plant of Mir is dolabratus 182 



reported bridging host for transfer of 



timothy rust 222 



source of Puccinia graminis phleipratensis 



transferred to semicongenial hosts 344 



Dairy cattle, crosses with beef breeds i-S7 



Damping-off diseases of conifers 521-558 



Dasheen. See Colocasia esculenta. 

 Datana inlegerrima, effect of hydrocyanic- 

 acid gas on 264-268 



Denitrification in diseased spinach 401-404 



Desiccation, effect on catalase activity of 



seeds 149-150 



Determining the Absolute Salt Content of 

 Soils by Means of the Freezing-Point 



Method (paper). . . .■ 331-336 



Dextrose in intimiescences on frozen leaves. . 88 

 Diabrolica — 

 duodecim punctata, possible carrier of Bac- 

 terium lachrymans *'* 



vittata, possible carrier of Bacterium lachry- 

 mans "'* 



Diachasma — 

 fullawayi — 



life history 445-448 



natural enemy of Mediterranean fruit fly. 



419-466 



Diachasma — Continued . 

 try(mi — 



Ufe history 420-4J9 



natural enemy of Mediterranean fruit 



fly 419-466 



Diamino acids in healthy and blighted spi- 

 nach 399-404 



Diaporthe — 

 batatatis, causal organism of dryrot of Ipo- 



moea batatas 349 



umbrina, n. sp., cause of brown canker of 



roses 593-600 



control 598-599 



cultural characters 598 



description 596-597 



life history 598 



Dicotyledons, parasitized by same damping- 

 off parasite as conifers 535-558 



Dietz. H. F., and Sasscer, E. R. (paper): 

 Fumigation of Cattleya Orchids with Hy- 

 drocyanic-Acid Gas 263-268 



Dimorphism of A/i>>.j dolabratus 183-184 



Dioxid — 

 carbon, in silage, released by enzymic and 



yeast action 589-590 



silicon in — 



mulch, plowsole. and subsoil 508-516 



normal and blighted spinach 37I-37S 



Dioxygen. used in determining catalase con- 

 tent of seeds 140-144 



Diplodia — 

 gossypina, causal organism of rot in Ipo- 



Tnoea batatas 347 



maclurae, causal organism of rot in Ipomoea 



batatas 347 



natalensis, causal organism of rot in Ipcmoea 



batatas ^47 



tubericola, causal organism of Java blackrot 



of Ipotnoea batatas 347 



zeae, nonvirulent to Ipomoea batatas 348 



Disaccharids in hardened and nonhardened 



cabbage •■ 95-96 



Discosia pini, not cause of damping-oS m 



conifers 55° 



Diseases of conifer seedlings 52 1-558 



Disulphid, carbon, effect on nitrogen-fixing 



organisms in soil 601-614 



Dormancy of seeds, relation of catalase and 



oxidase content to 137-174 



Douglas fir. See Pseudolsuga taxifolia. 

 Drouth injury, compared with damping-ofi in 



conifer seedlings 554-555 



Drying, effect on catalase activity of seeds. . 149-150 



Dryrot of Ipomoea batatas 349-350 



Echinocystis lobata. free from attacks of Bac- 

 terium lachrymans -°* 



Effect of Carbon Disulphid and Toluol upon 

 Nitrogen-Fixing and Nitrifying Organisms 



(paper) 601-614 



Effect of Farm Manure in Stimulating the 



Yields of Irrigated Field Crops (paper) .493-503 

 Effect of Hydrocyanic-Acid Gas under 

 Vacuum Conditions on Subterranean 



Larvse (paper) ■ ■ '33-'36 



Elaeagnus sp., host of damping-off parasites, 



535-558 



Electrometric titration of silage extract . . . 125-127 



