382 IXSKCTICIDES, FUNGICIDES, AND WEED KILLERS. 



worms into pieces and to roll thein in nux vomica powder, and to place 

 them ia their burrows. 



Bodents. — It is advised to poison wheat by strychnine, and to 

 place it in pipes in proximity to the burrows of the rodents. The pipes 

 prevent birds from being poisoned. 



148. Delphinium (larkspur). — The extract from the stems, leaves, 

 and seeds of the laiks])urs, especially that from the seeds of Delphinium 

 grandijlornm and Delphininm ajacis/in recommended tor the destruction 

 of insects. Powdered larkspur seeds are used in medicine to destroy 

 vermin in the head and to cure skin diseases ; extract of larkspur taken 

 internally is drastic, emetic, aperient, diuretic, and vermifuge. Laboul- 

 bene advises larkspur extract to destroy grey- worm, the caterpillar of 

 Agrotis segetmn, L. The young plants must be copiously watered with 

 this extract. 



149. Glue. — Glue made from animal matter may be used to 

 overcome the diseases of plants and animals. 



Use. — Pcronospora viticola, De By. (mildew of the vine). — Vesque 

 asserts that solutions of glue cure the vine, but the treatment injures 

 the development of the grape. 



Schizoneura lanigera, Hausm. (woolly aphis). — Del Quercio de- 

 clares that an excellent method of destroying this louse consists in 

 coating the colonies with a mixture of 1\ lb. of glue and 3 gallons of tar. 



150. Catechu or Cutch. — This astringent substance, extracted 

 from a species of Indian acacia, stops, according to Vesque, the develop- 

 uient of the oidiutu. 



151. Rose Laurel. — The infusions of this plant of the family of the 

 Apocynacea3 are used in medicine against scab. x\ccording to Debray 

 the rose laurel is macerated, in Algeria, for several days and the putrefied 

 liquid used to destroy insects, chiefly the mole-cricket. 



152. Aloes. — Aloes is the resinous juice, extracted from the leaves 

 of several species of aloes. It is bitter and nauseous. It is used as a 

 tonic, purgative, and drastic. In Tunis there is added to bouillie 

 bordelaise, intended to kill the Peronospora, 1-1-3 lb. of aloes per 100 

 gallons of bouillie, so as to destroy altises simultaneously. 



[The End.] 



