10 



Slug Shot : Slug- Shot is essentially crude gypsum mixed with small 

 quantities of Paris green, tobacco, and carbolic acid. It is sold in Guelph 

 at 10 cents per pound, or 3 pounds for 25 cents. In larger quantities it 

 can be bought for much less. The detailed results of our analysis are as 

 follows : — 



Moisture 1 3- 55 



Sand, etc 3-53 



Insoluble matter (sulphur, tobacco, etc.) 5.69 



Calcium oxide 3 - 10 



Sulphur trioxide 37-93 



Iron and aluminum oxides o. 80 



Carbon dioxide 2.79 



*Paris green 2.13 



Phenol, soluble organic matter, etc. (by difference) 3.38 



100.00 



Carbolic acid is a poison, and as such will, no doubt, destroy insects 

 as well as the Paris green ; but this mixture at even 5 cents per pound is 

 rather an expensive substance to use in destroying potato bugs. 



Bug Death. 



Another insecticide, containing no arsenic, that has recently come into 

 great prominence, is Bug Death. It is claimed that it kills the bugs, feeds 

 the plant, increases the yield, and improves the quality. It is sold at the 

 rate of 12 pounds for $1, or 100 pounds for $7. The following is the 

 composition of samples secured in 1902 and 1903 : — 



1902. I 9°3- 



Moisture 0.32 0.38 



Volatile matter 2.67 2.87 



Sand, etc 3.17 4- 26 



Lead oxide , 3.17 4-7° 



Zinc oxide 87.47 83.04 



Iron oxide 3-84 4-°9 



100.64 99-34 



It is composed largely of crude zinc oxide with small quantities of 

 lead oxide and iron oxide. It also contains nitrogen equivalent to about 

 one-half of one per cent, of ammonium sulphate. This latter substance 

 is a plant food ; but there is so little of it in the mixture that it cannot 

 have much value. Bug Death has considerable fungicidal value, and 

 destroys the bugs. It has to be applied in fairly large quantities and it is 

 rather an expensive substance ; but it has given good results when used 

 on potatoes. 



* Copper oxide .64 per cent ; arsenic trioxide .82 per cent. 



