bb AUSTRALIAN BUG. 



" One wine-glass full of paraffin to a gallon of water is 

 strong enough to kill Aphides, and such soft insects ; two 

 wine-glasses for Thrips, and three wine-glasses for Scale 

 is our ' regulation' strength. The tender young fronds 

 of ferns and the young green growths of most plants will 

 not be safe if over one wine-glass to the gallon is used.'" * 



The following note regarding spread of Australian Bug 

 during the year 1886, and means considered to be useful 

 in checking its increase, was forwarded me by favour of 

 Mr. F. von Schade, of Wynberg : " The Australian Bug 

 (Dorthesia) has made its appearance in the village of 

 Oudtshoorn, and we advise the property-holders to exert 

 much vigilance in exterminating it at -once. Putrid 

 blood has proved a good exterminator of the Bug. The 

 stems and branches of trees must be painted with the 

 blood, the smell of which attracts numerous insects 

 which devour the Bug. Ostrich droppings boiled in 

 water and the solution syringed on the higher branches 

 of trees has also been found very effective. Then there 

 is the solution made of tobacco and whale-soap for 

 washing and syringing." ' Wynberg Times,' July 31st, 

 1886. 



[If the blood could be applied to the stems and 

 branches of the trees as a painting, there would not be 

 difficulty in applying a good painting or scrubbing with a 

 thick soft-soap solution, which would probably have an 

 excellent effect. ED.] 



In regard to methods of application one great difficulty 

 is how to throw the fluids high enough to reach the 

 upper boughs and foliage of moderate-sized trees. Of 

 this Prof. Comstock says that the difficulty is best met 

 by using some kind of force-pump, by which mixtures 

 can be sprayed on the infested plants. The pump he 

 recommends is formed of two brass tubes, one working 

 telescopically within the other ; a hose is fastened to one 



* ' Eighth Keport of Observations of Injurious Insects,' 1834, published 

 1885. By E. A. Ormerod. Simpkin, Marshall & Co., London, England. 



