288 INSECTICIDES, FUNGICIDES, AND WEED KILLEKS. 



which linseed oil has been added. This plays no other part than the 

 soap used in soapy bouillie. This houillie is prepared as follows: 

 Slake 10 lb. of recently burnt fat lime and emulsify therewith \ lb. 

 of linseed oil, then run this mixture into a solution of 20 lb. of blue 

 vitriol in 50 gallons of water, and make up the bulk with enough 

 water to make 100 gallons. To render these bouillies insecticidal 

 as well as anticryptogamic, petroleum is added. A stable bouillie 

 is prepared as follows : To a soapy bouillie bordelaise of the following 

 composition, blue vitriol 1 lb., lime ^ lb., soft soap 1-3 lb. or rosin 

 soap 7-9 lb., in 10 gallons of water, add 2-6 per cent of a petroleum and 

 soap emulsion, made from petroleum 2 gallons, soap 1| lb., water 1 

 gallon. Zacharewitcsh obtained excellent results with a petroleum 

 and soap bouillie against Fumago saliciiia and the Cydoconium olea- 

 ginum (fumagine of the olive-tree) which invade the olive attacked by 

 Lecaniuni olecB. The bouillie contained : Soft soap 10 lb., petroleum 

 4 gallons, blue vitriol 10 lb., in 100 gallons of water. 



A concentrated solution of precipitated green copper soap in ether 

 or alcohol applied by the brush on the wounds of trees produced by 

 the w^oolly aphis covers them after drying with so adherent a cupric 

 pellicle that it forms a very efficacious and durable protection against 

 exterior destructive agents, and lets the wounds heal rapidly. Rain 

 does not remove this coating, which thus persists for many years. 

 Laborde found that Saglio bouillie, containing 3 per cent of a mixture 

 of rosin soap and blue vitriol, used in the struggle against the 

 Eudemis and GocJiylis of the vine, destroys 95 per cent of the first and 

 80 per cent of the second parasite. 



107, Resinous Bouillie. — On the suggestion of Rosenstiel, Perraud 

 recommended in 1898 a resinous bouillie of the following composition : 

 Blue vitriol 1-2 lb., rosin ^ lb., soda crystals to alkaline reaction, in 10 

 gallons of water. The preparation requires some precautions, for 

 rosin does not dissolve in water, only in hot alkali ; 5 lb. of carbonate 

 of soda are dissolved in 2 gallons of water, then, after having brought, 

 this solution to the boil, 5 lb. of powdered rosin are added gradually, 

 stirring the mixture till it becomes fluid. This solution of rosin soap 

 is poured after cooling into a solution of 20 lb. of blue vitriol. A 

 solution of carbonate of soda is added to this mixture until the bouillie 

 is alkaline to litmus paper and the bulk made up to 100 gallons. 

 This bouillie much resembles the soapy bouillie bordelaise recom- 

 mended in 1895 by Galloway, made by adding rosin soap to a 1 per 

 cent bouillie bordelaise. In this same category may be classed the 

 Aleppo pine galipot bouillie, recommended by Andre and Trabut 

 referred to on p. 214. 



Vidal recommends against the fumagine Capnodimn (black smut} 

 of the olive-tree a bouillie consisting of bouillie bordelaise 100 gallons,, 

 spirits of turpentine 1 gallon. 



