FUMIGATION OF ORNAMENTAL GREENHOUSE PLANTS. 
15 
TABLE I.—Plants and insects fumigated with hydrocyanic-acid gas in green- 
houses—Continued. ° 
Rate in | 
ounces 
per 1,000 acl] © Results of treatment. 
cubic §| 2/5 
feet. ee is 
he 
Name of plant. = &,| Infestation. 
= Se _— 
S |85/2| 8 
eg aa Z 3 On plants. On insects. 
a eo 
} oO ~ ‘Sj 
wn Ay ome 
SB 
Coleus (Verschaffelti).. eas a 1 | 60[ Orthezia.....-. No burning-.-.| 70 per cent killed. 
DOR seer eae ete See oee ib ))) GU eseae C6 Oye ee eet epee dOs2 sence 80 per cent killed. 
Coleus (mixed)....-..---- 2d ba Sie aa 1g | Oe eee Gow sleoalss Gove. sesh. 100 per cent killed. 
WOreGpSis sass soe nese nae ee ee A WWG2: oo: 2 saeeee esd ee Ow seisvee 
@OSMOSs5- ease ees sie=ioe Ha NERS ROO ens 2 sae ne Tips burned. 
SPREE eens as eis inl s ae eee TEST TS 7G ees casos so Slight burning 
Cotton ee nase oe5-ca- css Prey ae DGGE) S50. owes er No burning.. 
ED) OP eee Rise cin le Paes x. 1h (CAE aA elo Secsrrea ese: GO! ae ss 
IDX} el acer ee ere (A ch aoe Seep ea GLO OmNO Se) |asnee (0 (ORS eS All stages except eggs 
‘ : white fly. and late pupe killed. 
Croton (mixed varieties) ss las alt) | Gets Meee wrens ak cles Ae GOs sa4e she 
DOM SR. eS oak te ISS - 1 Wis (CCA ee ils Py be oe Osis. 2252 
Do Pe sey he SPM Ns Sy Res 1) 56)| Wongisealesss2|22 ==. do-kacne- 100 per cent killed. 
ORs Sana as comets ae HE | ea noes aeenearcoiolasee dl ane Glos yer ene 
Cudrania javanensis.....--|...... 13 ra Peed ete ca Slight burning 
Cudrania tricuspidata..-.-|...... Tes aTe Hl fe Eels eee eae an Pe Goteeeaee 
Cyclamen Soe eens oo PeltySe sete: Us| Co eres ees ee espe No burning 
Be By Orel ee aa act setae Tk ac Le SR a ie (Ae dO. see 
ORE tsa ween ee ser 2 x ale Ce 1 Tol Gyo ee alae ee | eo Gone ie 
Cyphomandra sp.--..--:---|_- : i A era ieee eee oe Slight burning 
COO Re EE eee Teer ET Beene TB 5 WaT pemegmee De  eS No ) burning... 
IB) Orage spate Sea aT asine sal nae Ed anos 6 ees ae Severe burn- 
ing of new 
foliage. 
peut ararilis Shore 2 EP eB re ae er pees Ap hidseeissce. No DEE -| 100 per cent killed. 
CUIZUE SCOUT On ae nee |e eee FL all tera eyerees | PS o' SS ene er aaye areal aero. Se Osasteciae 
euaNs PGs Bec eoee gs ene Sel Ae TOIT RM Eg EE Dea donee ae 
SENS Sedge ae See ill leds erin ool ba Pa Se | NSS ore (ene 0 0 J ae 
Dioscorea pentaphylla...--. i =e TPT OG Ne pee td Ee [ae do Ser tee 
Dates Se Sau oes lets 2 oe [zee arate (od Lena ITA Gin | peeenenes tee tts 8 [a a0 0 Tm erie ea 
Dracaena godseffiana...-..-|.... Pele La S51'66.\.. eee eee ae [ee ee dow ete 
DIOL eT OOUCOSD eoGadoss asees 5 GY sl Eos. oo coes 5 Sees ae bees 
ee Sa IFRS | 5 8 TEL RAB A, Veal yi ete Deane OC Dio). 
Bintelene DOUINGL ss Noe | ean TES | Ue 6S | haere S soos Bee es Slight burning 
seas SD see a eee cae es Files cys Vas Geto... Sees epeyrer se No. burning... 
BC ate eens ais] Ceram Te ee | Or, [les at ee ee eee le ee Oe cise es 
apichyllur SOee SS ee i Mehapeede 1 aA eG Oe ae ee a | Fa go ueatha Ree 
Ue a ete eee eee S| ees al | lel Ad ee Se Deal Bee OO Vales A peas oars 
Eupatoriim SDeetcs. tees i Lene IO |S | Re eT Ry | ie COyee es 
tae see eee oe Ste. 2 Solan rece ley OO «a eevee ale 2 ee Oka ane ae 
De Ste See ee etae Sats on!| Keene SESS SATs Nas See Severe burn- 
ing of young 
~ foliage. 
erns:1 
Adiantum cuneaium...- EN abe S TH Al GO| es eran eae Yue No burning. 
Adiantum croweanum... ey Come pas Ich SKU ol een a cee SS SER eA donyaeas: 
BIFOS MOST see ye -r Bite fee DLN s7AD is ee ie duis Mate LR: Cle Maes 
aD) Ozer as een ae Se | ean Tg Sy Ghee a 8 RO ae al | doze ashe: 
OS LOMA lee cane pa” Delis eseee on OU eee} oases Amaee Gosssses. 
See te ae Pewee att Seles cere Pa HOS ull 2 ema Mee ee a ae Oates 
ERO Uy et ee ee eas os Sa 5 EA) Say (ae ee a dome eeee 
1B IOS 2p eee ON 1) Ranta TRG: |_ See eee ee dogs 
DOr mae ee Ss Boge ae DN OOA tc, eee tana ct i ae dose ies: 
mors SD sane aoe ot eee LUO (09/2: Rene Cred ponies | Menges does -neees | 
CROSS ae oe aaa Site ak GS AOS ig] ie foe eae eee fee GOs Aes | 
Nephrolepis scottii......- 3 Kae TO | CSS Fa CCE Oe DE eed doe ee | 
Nephrolepis scholzelii.... ee Say ae ns (a anes Se ey haa ee dos sese as 
oe eps whitmanii.. By ee ey iSO NG 2.1 2). Seen ee remeron Ero oe B he/siosis 
Beate Bie oes iad Ep eee ile a oom Meerose Cs aasee claceasl ses eaaes 
eee Spee ants: i Beets: DEO) aR pee Og || er a do Bee uae 
a0t Sena eee BFE eeeses) al Ulta [aC0) Oe epee Sees yr sep eel (egos SIL XO KO) Petra 
Preris 5 Slopes ae ro he. 4 ae ISS 7H C10 at FRR. ASN Be dos sees 
Ficus aes yes SAN ag tad FA ape tr ASTD lice [Sor || =: 5 (eeee eey eam Slight burn- 
ing ot new 
growth. 
IRTETES GSO a SU Se aie gee Eee 23 | 2 -| Cottony scale.| No burning... 
All stages except eggs 
killed. 
1 Asparagus plumosus and A. sprengeri belong to the Lily family and are to be found under Asparagus. 
