THEY GROW BETTER • THEY YIELD BETTER 
Prairie State Incubators and Brooders 
Prairie State Diffusion Incubators 
famous for the Patented Sand-Tray, have for thirty- 
five years been accepted as the standard in hot-air 
type Incubator construction. Moisture is applied 
automatically by the sand-tray on the same prin- 
ciple applying in the natural hen's nest stolen upon 
the ground. Ventilation is positive, the ventilating 
and heating currents being in one, forced into the 
egg-chamber from the heater. Heater regularly 
examined and labeled under direction of Under- 
writers' Laboratories. Distribution is even, effected 
by the Eddy Current Distributor, maintaining uni- 
form temperature at all times on center line of 
thermostat. Regulator accurate and sensitive. Case 
double, walls insulated with cotton batting, and 
outer case of cypress, sanded and highly finished 
with lustrous varnish. Durable, and efficient re- 
gardless of outside weather. Hatch the most 
"Chicks That Live." Built in four sizes, every one a 
permanent investment. 
No. o Diffusion, lOO eggs $27 00 
No. I Diffusion, 150 eggs 35 00 
No. 2 Diffusion, 240 eggs 50 00 
No. 3 Diffusion, 390 eggs 65 00 
RAISE MORE CHICKENS. In- 
crease Egg Production. The nation 
needs tltem and is paying the price. 
4,000,000 less chickens in Pennsyl- 
vania in 1017 than in 1816. 
Prairie State Keystone Incubators 
Prairie State Colony Brooder 
Built in two sizes. Reliable, well-built little machines for one who hatches on a small scale only. Excellent for 
beginners. Efficient under all ordinary conditions. 
No. o Keystone, 60 eggs $15 00 
No. I Keystone, too eggs 18 5a 
Prairie State Brooding Equipments 
Prairie State Brooders offer a selection of equipments adaptable to every 
modern brooding method. Outdoor Colony Brooders are substantial, well-built 
hou.ses, each equipped with sun-parlor and nursery-room, with hover. Well 
painted and lasting in severe weather. Built of tongued and grooved lumber, 
with tin roof. Three sizes, offering choice of 9, 12 or 18 square feet. Splen- 
did equipment for back-lot chickens or for free range. 
No. 1,6x3 ft., with Hover $30 00 
No. 2, s X 2 K ft., with Hover 27 SO 
No. 3, 4 X ft., with Hover 22 00 
Prairie State Hovers 
BUILT IH T'WO STYLES 
The reliable Universal, and All Steel Portable, Shipped complete with lamp-case, one-piece steel lamp. No. » 
burner, metal chimney and thermometer. Strong, round, high and dark. Every inch of Hover-space available for 
chicks. Capacity 100 chicks. Ventilation forced and free, pure warm air always passing over backs of chicks as 
in nature's method. Best constructed Hovers on the market, and most 
accurate in principle. 
Universal Hover, with lamp-case, for outdoor brooding $9 00 
Universal Hover, without lamp-case, for indoor brooding 8 00 
Portable Hover, with lamp-case and regulator $18. .Junior. 11 00 
Prairie State Stove Brooders 
The last word in modern devices for large-scale rearing. Solid cast- 
iron with galvanized steel canopy and hover curtain. Care for flocks 
of 200 to 1,000 or more. Big fire-bowl capacity and non-clinker 
V grate. Accurate, powerful triple-control regulator. Built to 
last indefinitely, burn for twenty-four hours with attention 
only twice daily. Solid, substantial, sanitary. The only labor- 
.saving economical equipment for the large producer. 
Price, complete, including thermometer, shovel, funnel and 
poker, I40. Junior, {25 and Junior No. o, $18. 
61 
Prairie State Portable 
Hover 
