-50- 
BER3ERIS sp, 
BERBERIS VULGARIS L. forme ATROPUKP'JHEA Ke«*. Berberry. 
Acetone extracts of the roots of Berberis sp. killed 70 percent 
of the mosquito larvpe tested, end extracts of the roots pnd stems of 
B. v, a tropurpure e killed only 10 percent of the lervae.~Fe.rtz ell end 
Wilcoxon (JIBR). 
CAULOPHYLLUF THALIOTROIDES (L.) Michx. Blue cohosh. 
JEFFEFSONIA DIPHYLLA (L.) Pers. Twinleaf. 
Extracts were not repellent to the Japenese beetle.— Metzger end 
Grant (277). 
PODOPHYLLUM EMODI Wall, ex Hook. & Thomas . 
Extrects applied as sprays against adult mosquitoes were much in- 
ferior to the standard mo8quitocide.--Wats end Singh ( 421 ) • 
PODOPHYLLUM PELTATUM L. Common mayapple. 
The powder from the dried roots was ineffective v/hen dusted on 
cotton caterpillars. — Riley (325 , p. 187). 
Rhizoma podophylli had no perceptible effect on caterpillars of 
Pr odenip litura (F.) .— DeBussy (76). 
Extracts from the entire fresh plent were slightly repellent to the 
Japanese beetle.--LIetz£er end Grant (277). 
BETULACEAE 
(Birch Femily) 
BETULA ALBA L. White birch. 
In cherotropic tests in the fielr with oil of birch t»r negative 
results were obteined.— Imms end Husein (212 ) . 
BETULA- LENTA L. Sweet birch. 
Water extracts of the bark killed only 10 percent of the mosquito 
lervee tested. — Hertzell and Wilcoxon (lS8j . 
OSTRYA VIRGINIAN* (Mill.) Koch. Hophornherm. Ironwood. 
Extracts were not repellent to the Jppenese beetle. — Metzger end 
Orrnt (277). 
