TABLE OF CONTENTS. 
Pag®. 
Fundamental principles of natural gas production 7 
How natural gas is mined and served to the consumer 7 
Definition of lease 8 
Reserve acreage 8 
Distinction between acreage lease rentals and gas well royalties 9 
Fundamental conception of gas 9 
Cause of gas pressure 10 
What makes gas flow 10 
Definition of natural gas 10 
Definition of “mechanical mixture ” 11 
Definition of term ‘ ‘ vapor ” 11 
Gases and vapors distinguished 11 
Natural gas may be wet or dry 12 
Wrong impression of word “natural ” 12 
Natural gas a mineral 13 
Origin or formation of natural gas 13 
Starting point of gas activity 13 
Barometric pressure 14 
Gage pressure 14 
Absolute pressure 14 
Differential pressure 15 
Effect of pressure on gas volume, known as Boyle’s Law 15 
Effect of temperature on gas volume, known as Charles’ Law 16 
Gas sand or gas rock 16 
Definition of rock pressure 16 
Why rock pressure and volume must decline 17 
Regeneration -• 18 
Storage of natural gas 19 
Limits of geology 19 
Limits of underground reservoirs 19 
Open or natural flow 19 
Misleading well capacity 20 
Migratory and fugitive nature of natural gas 20 
Extent of natural gas underground drainage 21 
Quality and quantity of natural gas fixed by nature 21 
Scarcity of natural gas 21 
N atural gas service is based on a noncreatable and nonregenerative mineral . 23 
Natural gas service and oil business distinguished 24 
Drying natural gas 25 
Principles of natural gas transmission 27 
Transmission is more than mere transportation 27 
Why natural gas is compressed 28 
How natural gas is compressed 28 
Status of gas compressor art 29 
“Gas compressing” and “gas pumping” 29 
Rock pressure decline lowers compressor capacity 29 
Size and cost of lines necessary without compressors 29 
No heat loss in natural gas compression 30 
Not feasible to make natural gas main lines common carriers 30 
Natural gas distribution 34 
Natural gas is a service, not a commodity 34 
Why gas consumers use more natural gas than manufactured gas 34 
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