THE MONTHLY BULLETIN. 305 



SOAP WASHES. 



A simple and easily prepared spray for use in small gardens is made 

 from soap as fellows : 



Whale oil or hard laundry soap 1 i)oiind 



Water 15 gallons 



The soap is lirst dissolved in a small amount of hot water and the 

 remainder added afterwards. This spray will not injure tender plants 

 or foliage, and is recommended only f( r young s;ale inse'-ts, plant liee 

 and other soft-bodied insects. 



TOBACCO DECOCTIONS. 



For soft-bcdied insects in greenhouses, conservatories, or on house 

 plants, as well as for plant lice, leaf hoppers and other similar insects 

 in the open, the tobacco decoctions are invaluable because they do not 

 injure the foliage and give excellent killing results. 



Home-made Extract. 



Tobacco leaves or stems 1 pound 



Water 4 gallons 



Steep the tobacco in the hot water and apply directly. 



Commercial Extracts. 



The extract containing 2f per cent nicotine should be diluted to sixty 

 parts of water. The extract containing 40 per cent nicotine should be 

 diluted from one to one thousanci parts or one to fifteen hundred parts 

 of water. 



DUSTS. 



A number of valuable insecticides are applied dry as dusts. We 

 have already referred to Paris green and lime as being used in this way. 

 Dusts are easy to mix and handle and are often of great service to the 

 farmer and orchardist. 



FLOWERS OF SULPHUR. 



For a number of ^-ears tiowers of sulphur was used alone as a remedy 

 for mites on citrus and almond trees. It was distributed over the trees 

 by hand or with a blower in the earl}- morning when the foliage was 

 damp, thus enabling it to adhere. The warm sunshine oxidizes the 

 sulphur, the liberated sulphur-dioxide being the killing factor. Accord- 

 ingly sulphur is of little avail in the cool summer weather of the coast 

 counties ( r during the winter months anywhere. However, in the warm 

 interior districts this is still a verv etfective remedv for mites. 



