28 P. L. ROHRER & BRO., Seedsmen 
Smoketown, Lancaster Co., Pennsylvania 
Fight Bugs and Blight with 
Pyrox wastes no time and labor. Simply mix with water according to directions and within five min¬ 
utes you are ready to spray. One pound of Pyrox makes 5 or 6 gallons of spray. 
5 lbs., $1.70; 10 lbs., $2.90; 25 lbs., $5.00; 100 lbs., $12.00; 300 lb. bbl., $30.00. 
Pyrox Without Poison 
A paste fungicide that is a comparison to Pyrox. This material contains no Calcium Arsenate and is 
not an insecticide. Packed in 100 and 300 lb. containers. Used principally on potatoes and celery. Use 
18 lbs. to 100 Gallons of Water. 
100 lbs., $11.50; 300 lbs., $2S.50; 300 lb. ltbl., Price on Request. 
Nicotine Pyrox 
is a special new spray which performs all the regular Pyrox functions and has an additional attraction 
in that it kills sucking insects—like aphis. It is the first truly complete spray—an indispensable item 
for successful gardening—for vegetables, small fruits and flowers. 
5 lbs., $1.75; 10 lbs., $3.00. 
Bowker’s Copper Lime Dust 
BOWKER’S COPPER LIME DUSTS have met with marked favor among the many users of these prod¬ 
ucts by reason of their outstanding quality. Many years of experience in their manufacture and a clear 
understanding of the user’s requirements have been given careful consideration in producing this prod¬ 
uct. Bowker’s dusts are so fine and fluffy they pass through the duster without clogging, issuing in a 
cloud which completely envelops the plant, giving maximum coverage and protection. 
The following strengths are standard, but we will quote on other strengths, if desired. 
“9” Copper Lime Dust (equivalent to 25% Monohydrated Copper Sulphate or 36% Copper 
Sulphate). 100 lb. Drums. Write for Prices. 
“9-5” Copper Lime Arsenic Dust—9 % Copper—5% Arsenic (Same as “9” plus 13.25% Cal¬ 
cium Arsenate which is equivalent to approximately 20% of the commercial calcium ar¬ 
senate.) Write for Prices. 
Bowker’s Calcium 
Arsenate 
Is a powerful poison which kills 
potato bugs, bean beetles and 
other leaf-eating pests found 
among truck crops. It may be 
applied either wet or dry and is 
cheaper than Arsenate of Lead. 
2 lbs. to 50 gallons of water or 
1 lb. to 9 lbs. of Hydrated Lime. 
Write for Prices. 
Bowker’s Arsenate 
of Lead 
Is most effective as a poison for 
worms and insects which eat 
leaves of plants, fruit trees, etc. 
It is at its best in powder form 
in that it does not deteriorate 
from standing. Dust it on the 
leaves or mix 2 lbs. with 50 gal¬ 
lons of water. Write for Prices. 
Bowker’s Bordeaux Mixture 
In powder form is prepared especially to prevent 
Blotch, Cherry leaf Spot, celery blight, tomato leaf 
spot, blight and leaf hoppers on potatoes. It is a 
product superior to the home-made Bordeaux mix¬ 
ture in suspension, adhesive and spreading quali¬ 
ties. 6 lbs. to 50 gals, water equals 3-3-50. 8 lbs. 
to 50 gals, water equals 4-4-50 mixture. 
4 lbs., 52c; case (48 lbs.), 12c lb. 
Nitrate of Soda 
Supplies nitrogen to soil. Very active. Should 
be applied with filler or liquid. A valuable fertil¬ 
izer. Apply 150 to 200 pounds per acre, 1 pound per 
200 square feet but not until the plants are above 
the ground. If used in liquid form, dilute two 
ounces to one gallon of water and apply twice a 
week. Do not let nitrate soda touch green growth 
or it will burn. Write for prices, stating quantity 
wanted. 
Bowker’s Special Powder No. 1 
Is recommended especially to keep potatoes and 
tobacco free from bugs and rot. It may be used dry 
or mixed 6 lbs. to 50 gallons of water. 
$12.50 per 100 lbs.; 5 lb. Bag, 75c. 
Bluestone (Blue Vitrol) 
Used for Spraying Potatoes and celery with lime. 
Put up in barrels of 450 pounds each. Write for 
prices, stating what quantity is wanted. 
Lime 
Next to soil and moisture, lime is the most impor¬ 
tant. Valuable for spraying and dusting Potatoes. 
We are in a position to supply you with your lime, 
for either Spraying, Dusting or for land purposes. 
Write for prices, stating quantity wanted and for 
what purpose. 
