492 



making a stock mixture to be diluted to the full amount when used. This 

 mixture can be used twice or three times as strong on deciduous trees when 

 dormant. 



No. 15. LIVER or SULPHUR. 



Potassium Sulphide ... ... ... ^oz. to loz. 



Warm Water Igal. 



No. 16. BAIT. 



Bran lOlbs. 



Paris Green ... ... ... ... ... 4oz. 



Molasses ... ... ... ... ... 4lbs. 



Worked with water to the consistency of stiff dough into balls, and laid 

 at the foot of the plants for cut worms and grasshoppers. 



Fresh leaves of vegetables, sprinkled with Paris green and water, laid 

 about also make a good bait. 



No. 17. CARBON BI-SULPHIDE. 



Apply with Vermorel's Injector ; dose, 10 to 20 grammes to the square 

 yard, or close up to where white ants or phylloxera are. 



Bi-sulpMde of Carbon ... ... ... 1 part. 



Kerosene ... ... ... ... ... 1 to 2 parts. 



No. 18. HYDRO-CYANIC GAS. 

 For every 100 cubic feet of space to be fumigated 



Potassium Cyanide, 98 per cent. ... ... l^oz. 



Sulphuric Acid ... ... ... ... 2oz. 



Water ... ' 3oz. 



To generate the gas pour the acid slowly into the water in a deep cup 

 or earthenware vessel, add the cyanide to it, and retire quickly, taking care 

 not to inhale the fumes, which are highly poisonous. Fumigate 45 minutes 

 to one hour. This is the stronger winter treatment for deciduous trees when 

 the leaves are off. For summer treatment and for evergreens use half the 

 quantity of chemicals. Cyanide of Potassium is a deadly poison. 



No. 19. TAR WATER. 



Boiling Water 2gals. 



Coal Tar ... ., lib. 



Add tar, drop by drop, to boiling water, and stir violently. If the tar 

 is added in bulk it will not mix. When dissolved, make up to 100 gallons 

 with water. Spray under as well as upper surface of leaves. 



No. 20. WHALE OIL SOAP. 



One pound to two to four gallons water for scale insects ; lib. to four to 

 six gallons for mealy bugs, aphides, red spider, etc. Good's No. 3 potash 

 soap, one of the best, made of fish oil, and not more than 25 to 28 per cent, 

 water. 



SPRAYING PUMPS. 



Previously to the appearance of mildew in the European vine- 

 yards, the only spraying pumps known were somewhat after the 

 fashion of .those toy scent-atomizers used by hairdressers, and 

 were almost entirely used in conservatories, for spraying rare and 

 exotic ^ plants. Since then, however, the necessity of dressing vines 



