MATERIALS FOR DESTROYING. 127 



when used in solution strong enough to be effective as 

 insecticides. Maskell. 



17. PARIS GREEN (POISONOUS). Said to be largely used 

 in America against codlin moth, &c. Bequires to be used 

 with great care. C. F. 



18. PYRETHRUM (PERSIAN INSECT POWDER). A very 

 useful preparation, the best being obtained from P. cinerae 



folium. This insect powder is of more use in small 

 gardens and dwelling houses than in general orchards or 

 farm work, as it is as yet too expensive to be used exten- 

 sively. C. F. 



19. QUIBELL'S INSECTICIDE. Has been tried here on 

 many occasions. Of great value in treating roots of 

 vines, orange, and lemon trees against attack of white 

 ants, &c. ; also for certain kinds of soft-bodied insects, as 

 woolly aphis, mealy bug, &c., and when in strong solu- 

 tion will kill scale, &c. C. F. 



20. KESIN COMPOUND. A most valuable remedy against 

 scale and other insects not easily destroyed by the ordi- 

 nary insecticides. This compound comes to us from 

 America, where it has been successfully used under the 

 supervision of Professor Riley, Mr. Koebele, and others. 

 Mr. Koebele speaks of it as being the most efficacious of 

 all remedies against scale insects. It has proved very 

 successful in Victoria also. The preparations are given 

 on page 41. C. F. 



21. SALT. Of not much use against ordinary insects, 

 but against slugs and snails it is very efficacious, and, as 

 a rule, should be used sparingly, for if used in large 

 quantities it is very injurious to crops. C. F. 



22. SOAP. Undoubtedly a valuable remedy, and, per- 

 haps, in some cases, as efficient as kerosene ; but it does 

 not kill the eggs. Maskell. Of soaps there are many 

 kinds a soft soap, an old and very trustworthy remedy 

 against plant lice, mealy bug, &c. 



23. BURFORD'S KEROSENE SOAP. This has been tried 

 with much success in South Australia, and I should 

 have no hesitation in recommending its use in our 

 colony. C. F. 



