THE ROCKY MOUNTAIN SEED COMPANY — 
SPECIAL MIXTURES OF 
INSECTICIDES 
NON-POISONOUS 
PYROCIDE 
. DUST 
ya) 
HIGH IM KILLING POWER 
UNIFORM 
PYROCIDE DUSTS 
No. 5-A DUST—Pyrocide Dust combined with Sulphur is rec- 
ommended for the control of psyllids, flea beetles, aphids, 
leaf hoppers, spider mites, striped and spotted cucumber 
beetles, thrips, lice, blister beetles, mildéw and rust. It is not 
recommended for greenhouse use. It should also be used with 
caution on raspberries and grapes since the sulphur in this 
mixture has a tendency to injure foliage and berries at high 
temperatures. When used on tomatoes and raspberries can- 
not be used after the fruit starts setting because of the sul- 
phur residue on the fruit. (1 Ib. 45e) (5 Ibs. $1.75) (20 Ibs. $4.59), 
Postpaid; (50 Ibs. $7.00), F.0.B. Denver. 
No. 10 DUST—Is recommended as a general insecticide, in- 
cluding the control of web worm, cucumber beetle, bean 
beetle, tarnish plant bug, leaf tier, grape leaf hopper, thrips, 
squash bug, harlequin bug, Colorado potato beetle and the 
asparagus beetle. Can be used on all types of plants under 
all conditions. (1 lb. 55c) (5 Ibs. $2.00) (20 Ibs. $6.00), Postpaid; 
(50 Ib. bag $10.00), F.O.B. Denver. 
No. 10-A DUST—Pyrocide Dust combined with Sulphur for the 
control of all types of pests that are found on plant as well 
as fungus diseases. It is especially effective on roses, del- 
phinium, larkspur and as a control of spider mites and mil- 
dew on all ornamentals, consequently is recommended on 
an all-around home garden dust. It is not recommended for 
use in greenhouses. (1 Ib. 60e) (5 Ibs. $2.00) (20.1bs. $7.00), Post- 
paid; (50 Ibs, $10.50), F.0.B. Denver. 
ROCKY MOUNTAIN HI-ALTITUDE APHIS DUST—A com- 
bination of Free Nicotine. and B-71 for the control of aphis 
on cabbage, peas, cauliflower and broccoli. (1 Ib. 50c) (5 Ibs. 
$1.65) (20 Ibs. $5.50), Postpaid; (50 Ib. bags $8.00), F.0.B. Den- 
ver, 
ROCKY MOUNTAIN HI-ALTITUDE APHIS DUST WITH 
SULPHUR—A combination of Free Nicotine, B-71 and Sul- 
phur for aphis control. (1 Ib. 55e) (5 Ibs. $1.85) (20 Ibs. $5.75), 
Postpaid; (50 Ib. bag $8.50), F.0.B. Denver. 
SABADILLA DUST No. 20—This dust is twice as strong as 
the No. 10 dust and is used for the control of squash bugs, 
and hard to kill insects. (1 Ib. 75c) (5 Ibs. $2.40) (20 Ibs. $8.50), 
Postpaid; (50 Ib. bag $15.00), F.0.B. Denver. 
19% ROTENONE DUST—Controls insects on vegetable crops, 
leaves no poison residue. Standardized at 3%, % Rotenone con- 
tent. For asparagus beetle, bean leaf beetle, leaf hopper, 
Mexican bean beetle, blister beetle, flea beetle, web worm, 
cabbage worm, plant lice, thrips, melon worm, striped and 
spotted cucumber beetle, rose slug, tomato horn worm and 
other insects. (1 Ib. 50c) (5 Ibs. $1.65) (20 Ibs. $5.50), Postpaid; 
(50 Ib. bag $9.00), F.0O.B. Denver. 
ROCKY MOUNTAIN R-60 DUST—A. combination of Lethane, 
Rotenone and Sulphur. Recommended for the control of 
many sucking and chewing types of truck crop insects such 
as pea aphids (and other plant lice), cabbage loopers, leaf 
hoppers, pea weevils and Mexican bean beetles. (1 Ib. 50e) (5 
Ibs. $1.25) (20 Ibs. $4.50), Postpaid; (50 Ib. bag. $7.00), F.0.B. 
Denver. 
DENVER, COLORADO oP) 
ROCKY MOUNTAIN HOPPER DUST No. 5 (Contains Chlor- 
dane)—For the control of grasshoppers, alfalfa weevil, lygus 
bug and other insects. Apply at the rate of 20 lbs. per acre. 
For the control of grasshoppers, dust on weeds around fence 
lines, shrubs and flowers in the late evening or early morn- 
ing while hoppers are quiet will give best control, contacting 
as many as possible with the dust. When used on fields of 
alfalfa there is a noted increase in both seed and hay. (1 lb. 
55c) (5 Ibs. $1.85) (20 Ibs. $5.00), Postpaid; (50 Ib. bags $7.00), 
F.0.B. Denver. 
5% DDT DUST—Effective in controlling a large number of 
different species of insects pests such as onion and gladiolus 
thrips, on potatoes—potato beetles, psyllid, flea beetles, leaf 
hoppers; lygus bugs on alfalfa and sugar beets grown for 
seed. Can also be used on all types of flowering plants, 
shrubs and trees. (1 Ib. 60e) (5 Ibs. $2.15) (20 Ibs. $4.00), Post- 
paid; (50 Ib. bags $6.00), F.0.B. Denver. 
10% DDT DUST—To be used when the 5% dust does not give 
good control, or hard to kill insects. (1 Ib. 65e) (5 Ibs. $2.65) 
(20 Ibs. $5.00), Postpaid; (50 Ib. bags $8.00), F.O.B. Denver. 
CRYOLITE CUCUMBER AND MELON DUST—A very effec- 
tive control against blight and striped cucumber beetle, on 
cucumbers and melons. Use at the rate of 20 pounds per 
acre. (1 Ib. 45e) (5 Ibs. $1.65) (20 Ibs. $4.50), Postpaid; (50 Ib. bag 
$7.50), F.0.B. Denver. 
COPPER CELERY DUST—Recommended for the control of 
early and late fall blight or rust of celery. Dust plants at 
first sign of blight and dust at intervals of every ten days in 
order to keep plants thoroughly covered. Copper has a 
stimulating effect on the growth of the plants resulting in 
increased yields and higher quality produce. (1 lb. 45c) (5 Ibs. 
$1.55) (20 Ibs. $4.00), Postpaid; (50 lb. bag $5.50), F.0.B. Denver. 
NOTT’S SEL-TOX 
A SELECTIVE CRAB GRASS KILLER 
(Phenyl Mercurice) 
One of the outstanding features about Sel-Tox is that it 
destroys crab grass without injury to lawn grasses. Turf and 
lawn grasses may be slightly discolored due to reduction of 
chlorophyl, and although withering of the outside sheathes 
may appear, that is only a temporary condition, and lawn 
grasses recover normal appearance within 10 days to two 
weeks. Surrounding grasses are unharmed, with clover re- 
maining unaffected. Reseeding is recommended after crab 
grass has been destroyed, which will produce a luxurious 
growth of grass in the thinned out areas. 
Postpaid (8 oz. $1.00) (16 oz. $1.50) (1 qt. $2.50) (44 gal. $4.50) 
(1 gal. $8.00). 
CRAB-NOT (Potassium Cyanate) CRAB GRASS KILLER— 
Kills erab grass only. Crab-Not (standard formulae) is a 
formulation of ‘“‘Potassium Cyanate,’’ comes in powder form 
and is completely soluble in water. Crab-Not is relatively 
NON-POISONOUS to man and animals, is non-volatile and 
ean in no way affect adjacent untreated vegetation. Crab- 
Not is exclusively and selectively a crab grass killer, will not 
sterilize the soil, but is of beneficial value, for Crab-Not 
breaks down into fertilizing elements on contact with the soil. 
“Seedling’”’ stage. This may require several treatments in 
most areas because crab grass usually germinates over a 
period of several months. For seedling treatment use 2% 
teaspoonsful of Crab-Not in 1 gallon of water and apply to 
bebesQ. tt. ob lawn: 
Sizes and Prices—4 oz., treats 700 to 1400 sq. ft., $1.00; 16 
oz., treats 2800 to 5600 sq. ft., $2.95, Postpaid. 
