-190- 
Comments by reviewer *— More work should be done using various ex- 
tracts of Digitalis against a wide range of insects. 
EUPHRASIA OFFICINALIS L. Byebright. 
Extracts were not repellent to the Japanese beetle.— Metzger and 
Grant (277). 
LINARIA VULGARIS Mill. Toadflax. 
MELAMPYRUM LINEARE Desr. Cowwheat. 
The juice of L. vulgaris mixed with milk is poisonous to flies and 
the smell of the flower also kills them.— Williams ( 428 , p. 917) • 
Extracts from these plants were not repellent. to the Japanese 
beetle.— Metzger and Grant ( 277 ) . 
RHTNANTHUS CRISTA-GALLI L. Rattlebox. 
This plant is listed as an inseoticide.— Lyons ( 248 , p. 395). 
SCROPHULARIA MARILANDICA L. Figwort. 
Extracts were not repellent to the Japanese beetle.— Metzger and 
Grant (277). 
SCROPHULARIA NODOSA L. Figwort. 
Extracts of the ■whole plant killed only 25 percent of mosquito 
larvae tested.— Hartzell and Wilcoxon (188) « 
VERBASCUM BLATTARIA L. Moth mullein. 
The powder, used as a dust, had a slight effect on cockroaches 
and tent oaterpillars; used as a stomach poison, it had a very slight 
effect on grasshoppers and flies, but none at all on cockroaches, silk- 
worms, and webworms. The water extract had no effect on webv/orms, 
potato beetle larvae, and rose aphids, but a slight effeot on honeybees 
and silkworms. An alcoholic extract was fatal to bees.— llclndoo and 
Sievers ( 259 , p. 24). 
VERBASCUM THAPSUS L. Common mullein. 
VERONICA OFFICINALIS L. Speedwell. 
An alcoholic extract of V. thapsus and a decoction of the leaves 
were ineffective against cotton caterpillars. — Riley ( 325 , p. 185). 
