SENECIO JACOBAEA & CALLIMORPHA JACOBAEA POOLE. 287 



(6). "Senecio sylvaticus collected in Yorkshire in August 

 proved equally inactive. Senecio vulgaris or common ground- 

 sel collected in England and prepared in the same way proved 

 poisonous." 



(7). "I hope to investigate further the toxicity of 

 S. jacobaea with the hope of elucidating the curious discrep- 

 ancies between my results and those of Gilruth and Pethick." 



(8). The following statement has just been made by 

 Professor Cushney in an autograph note on one of the said 

 printed papers in October, 1913. "Later experiments with 

 the alkaloids derived from the S. Jacobaea grown in Canada 

 have shown that they are quite as poisonous as those obtained 

 from S. latifolius" (Oct. 1913). 



The weed is rapidly spreading throughout the Pro vince, 

 and the appeals to municipal councillors have not yet incited 

 any effective action. Sheep are not so seriously affected by 

 the plant; but there is evidence that it is injurious to them. 

 The plant grows luxuriantly and, although it is popularly 

 known as "Stinking Willie", it is one of the most beautiful of 

 our weeds, the abundant pretty green foliage being surmounted 

 by a brilliantly yellow flat-topped cluster of compound 

 flowers. 



If the Cinnabar moth could repress the luxurious growth 

 of S. Jacobaea in Nova Scotia, it would require to multiply 

 rapidly and feed ravenously. 



But, what if the larvae of Callimorphd Jacoboea should 

 take to feeding upon the plants of economic value? What if 

 they should develop here as the Gypsy Moth and the Brown 

 Tail? The English Sparrow first introduced about 1850 has 

 long become too vigorous for America. The European rabbit 

 introduced into ^Australia in 1864 for sport, increased so 

 rapidly as to require legislation in 1879 for its destruction. 

 The Mongoose of India introduced into Jamaica in 1872, 



