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32 R. B. DUNNING &. CO. DU f} C o BANGOR - MAINE 
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O 
USE DU BAY SEED DISINFECTANTS 
far Greater Crop Profits 
New Improved SEMESAN BEL for Seed Potatoes 
New Improved Semesan Bel now offers 
you a quick, easy, inexpensive method of 
controlling Rhizoctonia, scab, and other 
surface seed-borne diseases of potatoes. 
It provides you with a definite mean's of 
reducing production costs — and increas¬ 
ing growing profits. In addition to killing 
seed - borne diseases 
Improved Semesan 
Bel protects the seed 
pieces from rotting 
under cold, wet soil 
conditions, assuring 
better stands and 
larger yields. 
Increases in yields 
ranging up to 25% 
have been obtained 
with Improved Seme¬ 
san Bel, but let us 
figure the profit on 
the average increase of 13.6%, or 35.4 
bushels. The 35.4 bushels priced at $1.01 
each — the ten-year average farm price 
for potatoes — are worth $35.75; deduct 
the cost of treating 20 bushels of seed per 
acre with Semesan Bel bought at the 25- 
pound rate, or 36 cents — and the profit 
is $35.39 per acre, or 9830% return on the 
money you spent for disinfectant. A hand¬ 
some profit! 
At a cost of only IV 2 to 3 cents for each 
bushel of seed planted — for less, even, 
than the cost of the old “2-hour” soak 
methods, you can disinfect your seed 
potatoes by this 
effective, time and 
labor-saving dip 
method. Considering 
the time, labor, and 
equipment expense, 
the Improved Seme¬ 
san Bel method costs 
as little even as the 
formaldehyde treat¬ 
ments. No. IV 2 to 2- 
hour soaking is nec¬ 
essary. No time 
wasted. 
PRICES: 
4 oz. $ .50 a tin 25 lb. $ 31.25 a pail 
1 lb. 1.65 a tin 100 lb. 120.00 a drum 
5 lb. 7.00 a tin 300 lb. 345.00 a drum 
1 lb. treats 60 to 80 bushels of seed 
potatoes. May be mailed. 
Free pamphlet. 
SEMESAN 
for Vegetables and Flowers 
NEW IMPROVED 
SEMESAN Jr. 
for Corn 
Prevent the many damaging diseases 
carried on the seed of flowers and vege¬ 
tables by treating with Semesan before 
planting. It reduces seed decay, and damp¬ 
ing off, which insures you of a better 
stand of sturdier plants that will give 
heavier yields. Recommended for seeds, 
bulbs, gladiolus corms, dahlia tubers and 
rose bushes. Easily applied as liquid or 
dust. Semesan costs but % to 1 cent a 
pound of seed. Directions in every can. 
Prices: 
2 oz. 
$ .50 
a tin 
1 lb. 
. 2.50 
a tin 
5 lb. 
11.75 
a tin 
25 lb. 
. 46.25 
a pail 
100 lb. 
. 180.00 
a drum 
300 lb. 
. 525.00 
a drum 
1 oz. treats 15 to 30 pounds of seed. 
May be mailed. Free pamphlet. 
IV 2 cents an acre for New Improved 
Semesan Jr. is a trifling investment to in¬ 
crease your corn crop 10%. In 51 test's on 
Corn Belt farms, this new ethyl mercury 
phosphate dust produced an average in¬ 
crease of 10% in yield. New Improved 
Semesan Jr. protects seed field or sweet 
corn against rotting; gives better stands; 
reduces losses from root rots. Easily and 
quickly dusted on seed at the rate of 2 
ounces a bushel. There is a measuring 
spoon in larger sized tins. Costs less than 
2 cents an acre. Does not reduce the rate 
of drop in planting. 
Prices: 
4 oz...$ .35 a tin 
1 lb. 1.00 a tin 
5 lb. 4.75 a tin 
25 lb. 23.25 a pail 
100 lb. 90.00 a drum 
1 lb. treats 8 bushels of seed corn. May 
be mailed. Free pamphlet. 
All prices quoted in this catalogue subject to change without notice. 
