12 
BULLETIN 513, 
U. S. DEPARTMENT OF AGRICULTURE. 
TaBLeE I.—Plants and insects fumigated with hydrocyanic-acid gas in green- 
houses. 
Name of plant. 
ee ee es 
ee iy 
wee eee et ee ee ee ee eee 
Actinidia polygama....... 
Adenocalymma cosmosum. 
Agave americana......-... 
Aga velsp ie es nase oe eee ee 
Agee SDeee se ee 
eececests recor er secre es 
ALDIZZUNS De ease en ace ee 
VAILEUrtles' SPese eee ee eee 
ee MULLEN Seton nes 
Amaranthus sp........-.- 
A mary SPasee eee eee eee 
eee eee etree et ee ee eee 
ANNONUSDsaee eee 
Antidesma bunius.......-. 
Anthericum sp......-..- Me 
Anthurium sp....:.--.--- 
Aralia guilfoylei....... Lf Soe 
PAT UISSIOIS Deere eee 
D 19 
A ristolochia sp 
PAGLEMISULSD ane eee 
Artillery plant. 2. ss ce 
Asparagus plumosus...... 
Do ete te Nek ation 
pee 
Atropa Spisesoe var fcleeieiace 
Rate in 
ounces 
per 1,000 
cubic 
feet. 
Potassium 
cyanid 
| Exposure in hours. 
Sodium cy- 
anid 
Sel he 1 
eae 1 
3 eS 1 
Sao 1 
pe Nanr e 1 
Plena 1 
eile otal 1 
alte a 1 
ene ies 1 
AS ede y |) 8 
ite ea 3/1 
Pa aaa i 
Ucn Ae 1 
MAE. 1 
sale 
Seat stile 
= Py ats il 
4 5 , 
-s-+-- 7 
ape 1 
i eesnceco 1 
en See 1 
Sed a 1 
eae a 1 
Fa ae i 1 
eu a is 1 
Ie 13/1 
| aan 1 
i 1 
Nia 
Sa eoae 1¢| 3 
| uewiaes 1 
alps ; 
Sica 
a $) 4 
ates! 13\\4 
Ss 12:| 1 
aes 1 
5 ane 1 
3 1 
4 |receee 
Ba ceva $| 4 
pala 1 
a ae Ta 1 
ae 1 
ee ei 1 
Ohad 1 
4 
foie wes 1 
AT a 11 
ig a 1 
Lol ete 1 
pisevae 1 
Elie wie 1 
Pe abd 1 
i yi 1 
Bul seras 1 
ra Bak 1 
RTI DaTe 1 
Ram 1 
ce iL 1 
Bille fae 1 
Bi Se oss 1 
BP eo ae ee 1 
Infestation. 
On plants. 
Results of treatment. 
On insects. 
Jy | House temperature. 
70 Greenhouse | No burning... 
white fly. 
5S alee COs see Sil see GO 
68 eee GOW ee Sei Go. 2% 
56h see GO ares eae Gosee 
G45 | eee GO senses do. .- 
CHA eee dO: Sass c ea eeeee doe Sseee 
COs saeee se eee ees dower 
(GY Oh Risso Ame car eal one we dose ee 
GO| eee ys Pe ees dose 4 
DI eee Apa ebat 2 hea eal oe doreeners 
bs alc cs me TR pice Neat es Si dope 
BS) | et eetieed crt ey Lins |e ae Goes oocee 
(oY as alee 2 Pek eee LS dose ne 
ET ESAS SUee GOs O nA eone GOREN se 
OGL ES Seree ere yee ee eee do. 
(Bre ee eigtasecenone. Slight burning 
6632 Se Seen eae Nepurning: uy 
GS ie See as ees Lae ee do. se 
Be ere ak a uat, en es Sie po otoyeepe seas 
(a. hl Re ae en nag Si dOeaseehee 
58 | Greenhouse }..... GOs ous 
white fly. 
O44)... (eee Meee GO es eeieess 
AB Wooece GO Asse oa GOs ei Sake 
LO} |e Asphidstaseee es |nse as oe DAS oe as 
68: /henee GOG2 =e ssl eee GOnesaeee 
ol ee Slight burning 
TOG al eee Bee el Sa pere dO sence 
(V7 Rees i EA Sgn No pea i 
Fa ee |. Neth DS UN a ges dose 
eee ApMiGSeece BO (1) Bre is Snes 
ya ys eee a pas eal rey GO soe ack 
GOEL See 2, Peer AS See doz eae 
UH RRS cb cubanedsod| badse dO eoanee 
8th 2 Sees oes] oer G0.go hace 
Set ll = Raped aves even oes Eigse OBER nes 
us SRS oe ee aire apart panne 
io Long scale. - No burning. . . 
se eae ne ess Nt OV Saewieks 
60 Longscale....|..... Ose toa 
Si aeal er) 2 eRe oh fs she heal Perper dows eees 
GONE eee ye ager dozer 
G2 eRe aa son sete See do.. ae 
7 ape eS i alt Rp | GO28 eens 
GORE. SES cle eee ose eases 
COC SE OSs A eT babe 6 (a aes 
GGi ic ee sores ees dois sees: 
(6)! heh SSE Oe Aes Slight barney 
CLUDE R aL eee ae No burning. - 
GON Re ee Se Tips burned. - 
7K) PA 5 SS eer bee | eras doses ee a 
GOS. eee Oe a eas Goze see ce 
GSoC ene Severe burn- 
ing. 
GU eee GS docuceaee Tendertips 
burned. 
PAU Pade ihe aie a No burning. - . 
G8 o eS sees cee Tender’ tips 
burned 
OT SAEs on Seo Eeeso Bead Goeeeseees 
625] cet ek et No burning... 
(492.2 ees eerie eee (6 Pole rye 
PT Rae Has aaoee marca Go Geeaeece 
ee Ee ose MCeoe Iscste Goneeeecen 
(Ai) ES Sat oSe see CG [oes ee 
64). ao RS Se SOS Se GOSaceesce 
76 eee ew we eee eee eee eee ee do eeeeeacern 
All stages except egg 
and He pupe killed. 
All stages except eggs 
and late pupe killed. 
100 per cent killed. 
Do. 
Do. 
80 per cent killed. 
100 per cent killed. 
