-84- 
CRACCA spp* 3m TEPHROSIA. 
CROTALARIA PANICULATA Willd. 
This plant was used in India aa a fiah poison and as an insecti- 
oide. — Roark (532 , p. 14)* 
CROTALARIA spp* 
In tests an the effect of poisonous plants on oane grubs in 
Queensland this genus waa the most promising.— J arris (220 ) . 
CROTALARIA VERRUCOSA L. Synonym: C. anguloaa Lam. 
The juice of the leaves and tender stalks was used in cases of 
soabies*~^ffatt (422 , v. 2, p* 614). 
CYTISTJS LABURNUM L* Laburnum* 
Cytisine is an alkaloid showing physiological properties similar 
to those of nicotine* Tests with body lice, in which garments were 
impregnated with weak solutions of oytiaine, were satiafactory from the 
experimental viewpoint, but this alkaloid was too toxio to the human 
skin to be considered as a practical louse remedy, — Bacot (48) • 
Cytisine is rather widely distributed in nature, being found in 
many species of Cytiaua and also in several speoies of Genista , Ulex , 
Sophora , and Baptlsia * It has been isolated from the seeds of laburnum 
(1*56 peroent), gorse (l*03 percent), broom, Sophora speciosa Benth* 
(the poison bean of Mexico and Texas, 3.23 peroent) , S* secundl flora 
Lagasoa (a small shrub of Texas, 3*47 peroent), S. tomentosa Sohrurbaum 
(2*06 peroent), and Baptisia australia (1*56 peroent!"* The crude 
oytisine, unlike nicotine, did not prove toxio to the eggs of a moth. 
A 6-peroent chloroform extract of the seeds killed 100 percent of the 
bean aphid and a 2*5-peroent extract killed 80 peroent, while a 0.06- 
percent nicotine solution killed 92 peroent*— Tatters field and coworkers 
(393)* 
CYTISUS SCOPARIUS (L.) Link. Scotch broom. 
An infusion made from freshly crushed broom tops was recommended 
for killing larvae of the oabbage butterfly. In France it had also been 
found effective for removing cochylis larvae from vines and various 
caterpillars from apple treea.— Anonymous (26). 
Water extraots from the tops of Scotch broom, collected in two 
localities, had practioally no effect on silkworms. Since this plant con- 
tains sparteine, a 0.5-peroent solution of sparteine sulfate was fed to 
silkworms. This solution proved effioient but acted very slowly. — 
McTndoo and Sievers (259, p. 22)* 
