THE ROCKY MOUNTAIN SEED CO. 
DENVER, COLO 
73 
“BLACK LEAF 40” 
There are two distinct kinds of plant 
insects, the “chewing” (eating) kind and 
the “sucking” kind. 
The sucking insects feod by inserting 
their sharp, slender beaks into the inte¬ 
rior of the leaf, blossom, stem, or fruit. 
They cannot eat plant tissue, hence can¬ 
not eat poison. They must therefore be 
killed with a preparation which kills by 
coming into contact with their bodies; 
in other words, by a contact insecticide— 
“Black Leaf 40.” 
Black Leaf 40 is deadly effective 
against aphids (plant lice), thrips and 
leaf hoppers. A 35c bottle will make 6 
gallons of effective spray. 
Prices, not prepaid: 1 ok., 35c; 5 oz., $1.00; 1 11)., 
$2.25; 2 ll>s., $3.25; 5 lbs., $5.85; 10 lbs., $10.60, each. 
If wanted by parcel post add postage. 
NEW EVERGREEN 
Is effective against cabbage worms, cucumber and 
melon beetles, aphis, leaf hoppers, currant worms 
and most other insects, both chewing and sucking. 
Harmless to man and beast. Easily applied with 
any sprayer. One ounce makes six gallons of spray. 
Prices: 1 oz., 35c; by mail, 40c. 6 oz. size, $1.00; 
by mail, $1.05. 16 oz. size, $2.00; by mail, $2.10. Gal¬ 
lon size, $12.00; by mail, $12.50. 
Treat Before Planting With 
SEMESAN 
For Disease Protection 
Increase Your Garden Pleasure and Your 
Farm Profits by Preventing Losses 
From Plant Diseases 
SEMESAN—For vegetable and Flower Seeds and Bulbs. 
increases germination, makes stronger, earlier bearing 
plant. Controls damping-off of seedlings. Easily ap¬ 
plied. Full directions with each package. Prices: 2 oz., 
35c; 1 lb., $2.25; 5 lbs., $9.90, not postpaid. 
SEMESAN BEL—For seed potatoes. Effective control for 
scab, rhizoctonia and black leg. Protects from rotting, 
improves germination, produces a larger crop. One lb. 
treats 70 to 8 0 bu. of seed. Prices: 4 oz., 45c; 1 lb., 
$1.50; 5 lbs., $6.75, not postpaid. 
SEMESAN JR.—For field and sweet corn seed. Destroys 
disease germs on the seed, protects from rotting in cold, 
wet soil, makes earlier planting possible, reduces root 
and stalk rots, increases yield. Use 2 oz. per bu. of seed. 
Prices: 4 oz., 35c; 1 lb., $1.00; 5 lbs., $4.75, not postpaid. 
NEW IMPROVED CERESAN (For Wheat, Oats and Barley) 
—This ethyl mercury phosphate dust disinfectant is for 
the control of bunt or stinking smut of wheat, smuts of 
oats, and covered smut and stripe of barley. It is easily 
and quickly applied with a seed treater or by the shovel 
method. It does not reduce drilling rate nor damage drill. 
One pound treats 32 bushels of seed. Prices: 1 lb., 70c; 
5 lbs., $3.00, not postpaid. 
Kills rats, mice, ground 
hogs, wood chucks, prairie 
dogs, moles, pocket goph • 
ers, chinch bugs, ants and 
other insects. 
CYANOGAS (A) DUST —Is a grayish powder that give.s 
off hydro-cyanic-acid gas when exposed to the air. This 
gas is deadly to rodent and insect pests and will kill 
them almost immediately. 
Write us for special circulars giving full 
information about the use of Cyanogas. % 
lb., 45c; 1 lb., 75c; 5 lbs., $3.00. Cannot be 
mailed. 
CYANOGAS. (G) FUMIGANT—For green¬ 
house mushrooms, and soil fumigation. 
Scatter over the greenhouse walks and 
close the house for the night. Generates 
deadly hydrocyanic acid gas which is very 
effective in controlling aphis, thrips, white 
fly and soft scale. 5 lbs., $3.00; 25 lbs., 
$10.00. Cannot be mailed. 
CYANOGAS ANT KILLER 
For Lawn and Garden Ants. The activ¬ 
ity of an ant colony centers around the 
queen. She never leaves the deeper part 
of the nest. To permanently destroy the 
colony it is necessary to kill the queen as 
well as worker ants. 
Simply enlarge entrances of nest with a 
pointed stick. Adjust spout on can and 
flow a small amount of Cyanogas into the 
hole. Then close with dirt. 4 oz. can, 30c. 
Cannot be sent by mail. 
Cyanogas? 
f WEf CtOWIHG Vj4i - 
CALCIUM CTAI»lD{ BT5J 3 
Ikills HI 
FORMALDEHYDE —A valuable disinfectant. It is very 
effective when used to destroy smut germs in oats and 
scab on potatoes. Directions on can. Formaldehyde is 
also used by onion growers to control onion smut. 1 lb. 
can, 40c, postpaid: 6 cans, $1.80, not postpaid. 
CORONA COPPERCARB 
to 
For killing smut spores in 
wheat. Corona Coppercarb has 
been found to be highly effi¬ 
cient. It is a specially pre¬ 
pared product and nothing has 
to be added to it to get results 
desired. Circular matter giv¬ 
ing authoritative information 
can be had on request. Two or 
three ounces per bushel is 
recommended. Packed in 5-lb. 
carton. Price, 90c each; per 
case, 30 lbs., $4.50, not postpaid. 
BLUE VITRIOL OR SULPHATE 
OF COPPER 
This is a preventative of smut 
in your grain, and when the 
seed goes through a solution of 
vitriolized water the crop pro¬ 
duced therefrom will be clean 
and free from smut. One pound of Blue Vitriol dissolved 
in 20 gallons of water makes a suitable solution for treat¬ 
ing 30 bushels of wheat or barley for smut. 
Fine Crystals—Postpaid: 5 lbs., $1.00; 10 lbs., $1.75. 
Not prepaid: 5 lbs., 60c; 10 lbs., $1.00; 25 lbs., $2.25; 
50 lbs., $4.25; 100 lbs., $8.00. 
Powdered —Used in making Bordeaux Mixtures and 
Copper Solutions Postpaid: 5 lbs., $1.10; 10 lbs., $1.95. 
Not prepaid: 5 lbs., 75c; 10 lbs., $1.20; 25 lbs., $2.75; 50 
lbs., $4.75; 100 lbs., $9.00. 
KOPPER KING 
Basic copper sulphate, a fungicide of revolutionary im¬ 
portance. It is neutral and insoluble, requiring no lime to 
prevent it burning the foliage. It contains twice as much 
copper as ordinary copper sulphate. Can be used as a 
liquid spray or combined with a carrier in making a home¬ 
made dust. 
4-lb. bag, 75c; 25-lb. bag, $4.00; 100 lbs., $14.00, not 
postpaid. 
ACME SPRAY SPREAD—(To be used with Kopper King) — 
A4 pt. can, 25c; quart can, 75c, not postpaid. 
NITRAGIN —Alfalfa, all clovers, soy beans, cowpeas, vetch, 
peas and beans should all be inoculated with this orig¬ 
inal soil inoculator. Nitragin will produce more vigor and 
vitality, increase your yield, and quality and add fer¬ 
tility to the soil. 
INOCULATOR 
PRICES 
When Ordering, Always 
Specify Name of Seed 
Alfalfa, all Clovers 
Size Rctail 
y 2 bu. ..$ *35 
1 bu. .. 
2 y 2 bu. ea.„. 1-20 
Vetch, Austrian Peas, 
Canadian Peas, Beans 
Size Rctail 
y 2 bu. ea.$ -30 
1 bu. ea.45 
* 1 % bu. ea.65 
5 bu. ea. 1-85 
•12i/ 2 bu. ea. 4.25 
*“100 lb. size.*' Packed 
only for Vetch and Peas. 
LESPEDEZA 
Unliulled or Hulled 
Size 
Retail 
.$ .33 
53 
5 bu. ea. 
1.20 
Peanuts, Soy Beans, Cow 
Peas, Lima Beans 
Size Rctail 
1 bu. ea...$ -35 
2 bu. ea.55 
5 bu. ea. L20 
10 bu. ea.-. 1 75 
*25 bu. ea. 3.75 
*“25 bu. size.” Packed only 
for Soy Beans, Cow Peas. 
New 
Garden Size 
NITRAGIN for 
Garden Peas, Beans, 
Sweet Peas, Lima 
Beans and Lupines 
Each package will inoculate 
any amount up to 4 lbs. seed. 
Retail Price .$10 ca - 
I CO-FUME POWDER— (Pressure Fumigator) Nico-Fume 
Powder S now supplied in special 
tins, in which the powder 1S insects.’ 
producing finely-divided fumes that Q 111 v ■ . , va£res 
This fumigator saves labor in the greenhouse and wages 
more effective war on insects. Price. A lb. < a . 
AGRI-PAX 
Agri-Pax is a pyrethrum 
oap spray that is used by 
Dmmercial growers, florists 
nd home gardeners. It is 
ot poisonous. Vegetables 
nd fruits sprayed with Ag . a-ft-or snraving 
i-Pax may be eaten almost immediately after spraying 
dthout fear. Price, gallon can, $3.00; 5-gallon can, $12.00. 
ot postpaid. 
AGRI PAX 
KILLS INSECTS -PRESTO! 
