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HELLEBORUS FOETIDUS L. Fetid hellebore. 
Extracts were not repellent to the Japanese beetle .--Metzger end 
Grant (277). 
HELLEBORUS NIGER L. Black hellebore. 
The powdered roots were inefficient appinst fly larvae, — Cook and 
Hutchison ( 103 , p, 4) • 
Extraction hellebori (10 percent in water), rhizoma hellebori (100 
percent), and rhizoma hellebori (10 percent in flour) were tested a- 
gainst the caterpillars of Prodenia litura (F,), The first had no ef- 
fect on the insects, the insects did not eat the second, but they ate 
a little of the third. — DeBussy (76). 
Extracts from the dried rhizomes were more or less repellent to 
the Japanese beetle.— Metzger and Grant ( 277 ) . 
HELLEBORUS ORIENT ALIS Lam. 
This speoies was used by the ancient Greeks and Romans in treating 
mania, skin diseases, etc—Webster's Dictionary (424 ) . 
HEP ATI CA AMERICANA (DC.) Ker. or H, NOBILIS Schreb, Hepatica. 
Extracts were not repellent to the Japanese beetle,— Metzger and 
Grant (277). 
HYDRASTIS CANADENSIS L. Goldenseal. 
Hydrastine and hydrastinine, alkaloids of goldenseal, had no insecti- 
cidal value. These two substances were not materially toxic to the bean 
aphid at or below a concentration of 1 gm. per 100 cc— Tattersfield and 
coworkers ( 393 ) , 
Extracts were not repellent to the Japanese beetle. — Metzger snd 
Grant (277). 
Water extracts of the root (N, F.) killed 70 percent of the mos- 
quito larvae tested,— Hartzell and Wilcoxon ( 138 ), 
NIGELLA SATIVA L. Fennel flower. 
The natives of Hindustan sprinkled the seeds among woolen cloths, 
shawls, etc., as a preservative against destructive insects, -—Honig- 
berger ( 200 , p. 317). 
It was used to protect linen against insects .--Dymock and coworkers 
(124, v. 1, p. 28). 
