B. C. ENTOMOLOGICAL PROCEEDINGS, 1912. 31 



The same care should be taken when treating the root system of 

 other trees, vines, shrubs, plants or bulbs, any of which may require a 

 different method of application, according to their susceptibility to 

 injury. 



Willis G. Johnson, State Entomologist and former professor at 

 Maryland Agricultural College, is editor of a very useful book dealing 

 with the different methods of fumigation of all kinds of stock. (This 

 book is published by the Orange Judd Co., New York.) 



Several years ago the orchardists in California commenced using 

 CS2. very extensively, in order to rid their deciduous fruit-trees of the 

 peach-tree root borer, "Sanninoidea opalescens," but, as the result of 

 careless application, many trees were killed outright and others injured. 



The favorite practice was to make a trench about six inches deep 

 around each tree, pour in one or two ounces of the CS2. liquid and 

 cover up the trench with soil. This treatment was very effective in 

 killing the borers within twenty-four hours, when the soil around the 

 tree would be removed and the space aired before replacing it. But 

 injury resulted from applying the liquid to the bark of the tree, instead 

 of keeping it two or three inches away, or in some cases the soil was 

 too wet for the operation. Too much moisture in the soil, or sudden 

 rain within a short time of the distribution of the liquid, would always 

 result in injury. 



I shall never forget the sight of a whole ten-acre block of fine 

 seven-year-old prune trees on almond root totally destroyed as the result 

 of careless application of CS2. 



Carbon Bisulphide is a valuable servant, when properly handled, 

 but capable of doing untold injury when used by inexperienced people. 



The insecticidal properties of CS2. were discovered in 1856, but 

 it was not until twenty years later that it was brought into prominence 

 in France, for use in fighting "Phylloxera." l^his commercial grade 

 is now known as "Fuma." 



W. H. Lyne, 

 Assistant Inspector of Fruit Pests. 



Mr. Cunningham — I want to endorse what Mr. Lyne has said 

 in his paper. Carbon Bisulphide is a most satisfactory fumigant after 

 we are used to it. 



Mr. Anderson — What effect would it have on the Codling Moth? 



Mr. Cunningham — Ver} good effect. 



Mr. Lyne — Directly we undertake to fumigate and pass infected 

 fruit on consignment the moral effect on the shippers is reduced. 



