CLASSIFIED QUESTIONS
AGRICULTURE
What is agriculture? 26.
Has farming helped civilization? 26.
What ancient people knew the wisdom of crop rotation? 26.
What is crop rotation? 1636.
How much of the plant body comes from the soil? 1636.
Why do plants have roots of different lengths? 1636.
What helps to keep down weeds? 1636.
How does crop rotation help farm labor? 1636.
What crop rotation is recommended for the southern states? 1636.
How does breaking up the soil crust keep moisture in the ground? 331.
For what are nitrogen-gathering crops, like the pea and bean, remarkable? 1353.
How many pounds of nitrogen can an acre of cowpeas produce? 1353.
What is the market value of nitrogen? 1354.
What ancient people hatched poultry by artificial incubators? 26.
What is the production of eggs in the U. S.? 1540.
What ancient country is a good example of intensive farming? 27.
How did the end of the feudal system affect farming? 27.
What Englishman introduced drill rows? 27.
How are all breeds of live stock improved? 27.
How was the Shorthorn breed of cattle produced? 27.
Who developed the Herefords? 27.
Is there much stock raised east of the Alleghenies? 1828.
Where are the Chester White and Poland-China hogs produced? 1828.
Where are horses raised extensively? 1828.
Why must our future meat supply come from the farm? 1828.
Jn what stockyards are 25,000 men employed? 1830.
For what two purposes are cattle being developed? 352.
How many hogs are marketed in a year? 1857.
When did government inspection of meat begin? 1196.
Have all the presidents been friendly toward agriculture? 27»
Why did many pioneer farmers fail? 27.
Why are the average farm yields so low in the U. S.? 28.
What was the situation of the American farmer 100 years ago? 28.
When was the first society for promoting agriculture organized? 28.
Where are experiment stations usually located? 28.
What is the Land Grant Act? 29.
What have the Adams and Hatch Acts done for agriculture? 29.
When will each experiment station have $30,000 a year? 29.
How many furrows will a steam plow turn at one time? 29.
Who fashioned the modern plow? 29.
How are the plow, hoe, pick and hatchet related? 1506.
What does wheat cost to reap by a harvester? 1592.
What Chicago mayor bought a half interest in McCormick's reaper in 1846? 1133.
Who made the first successful reaper? 29.
Who invented the cotton gin? 29.
How are the different parts of the cotton plant used? 465.
What is the yearly consumption of cotton? 465.
How have the transcontinental railways helped the farmers? 29.
What determines the kind of crops to raise? 29.
What substances are made from corn? 457.
How does a corn harvester operate? 457.
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