11 
ing the resulting fluid with barium chloride. There will be formed a 
compound of barium oxide and arsenious acid, barium arsenite and a 
compound of barium oxide and carbonic acid, barium carbonate. The 
results from this mixture have not been good, and a chemical 
analysis shows that all of the arsenious acid is dissolved by cold water; 
so it has, it is understood, been withdrawn from the market. 
“SLUG SHOT.” 
There is a compound called ‘“‘Slug Shot” that is very extensively 
sold because of its cheapness. An analysis of this substance shows 
that it is composed almost exclusively of crude gypsum with a small 
amount of arsenious acid and copper oxide added, probably in the form 
of Paris green. The amounts of these two substances in a sample 
recently examined were only 1.58 per cent argenious oxide and 0.58 
per cent copper oxide. It is needless to say that an article containing as 
little arsenious oxide and copper as the above will do little or no good 
as an insecticide, while 5 cents per pound is a large price to pay fora 
sample consisting of nearly 100 per cent gypsum. 
“BUG DEATH.” 
Another insecticide that has recently come into great prominence 
and had a very large sale all over the United States is ‘‘ Bug Death.” 
This substance is composed largely of zinc oxide with small amounts of 
iron oxide and lead oxide and about 3.27 per cent of ammonium and 
potassium chlorides. Of course the chlorides of potassium and ammon- 
ium would be of some value as plant food as far as they go. 
The Sixteenth Annual Report of the Maine Agricultural Experi- 
ment Station (1900) says in regard to this insecticide: 
When it is applied to potato vines at the rate of 40 pounds to the acre it has no 
appreciable effect on bugs, nor does it affect the foliage. 
When it is applied at the rate of 100 pounds to the acre it frees the vines of bugs, 
but at the same time some of the leaves curl up and die. 
As a fungicide this compound is of not much value, although it has a slight effect 
in preventing blight when applied at the rate of 180 pounds to the acre. 
Finally the following remarks are made: 
Because of its high cost and slow application no one growing any considerable 
amount of potatoes can afford to use Bug Death. The price of the labor required to 
apply Bug Death to 1 acre will buy the material and spray 2 acres with Bordeaux 
mixture and Paris green. 
“BLACK DEATH.” 
**Black Death” is another insecticide that is now on sale in various 
localities. It is composed of about— 
: . Per cent. 
LONHENDL FENa 0 CCL OLEH CLOTS I hag =, Ate ee Reet ee al Delt A Des 23. 00 
Ome AT ERI ge ora se ena pmb aan 75. 00 
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aE ere eee ee lO, i See uie deca wekeeewe ewcade . 59 
