THE GARDENER’S CATECHISM 
Read it and worry no more. 
What soil is fertile—can grow things? 
Top-soil—and little eise. 
What is top-soil? 
Top-soil is the product of decayed vegeta- 
tion accumulated for untold centuries— 
thousands, perhaps millions, of years. 
Why is our own soil becoming less fertile? 
Because years of cropping have taken out 
of it a goodly proportion of its organic 
plant foods. 
What can we do about it? 
Return to the soil the discarded organic 
wastes—cuttings, stalks, grass, straw, 
leaves, weeds, vines, etc.—which too often 
are burned or thrown away. 
How can we do it? 
These wastes should be treated with 
ADCO, and then become a true manure, 
clean and odorless. 
W hat is ADCO? 
ADCO itself is not a fertilizer. Instead, 
it is a combination of the substances 
which support the life of the micro- 
organisms, always present, which convert 
non-woody wastes into genuine manure, 
but free from its offensive characteristics. 
ADCO WORKS «° Carlisle, Pa. 
