CHAPTER III. Air

AIR

AIR

CONSTITUENTS OF AIR

GENERAL CONSIDERATIONS AIR, MIXTURE OF GASES ATMOSPHERE AQUASPHERE PETROSPHERE FUNCTION OF AIR

OXYGEN PER CENT OF OXYGEN USE IN BODY AMOUNT REQUIRED VARIES

NITROGEN MORE IMPORTANT TO PLANT LIFE USE IN BODY

ARGON MEANING OF NAME AMOUNT IN ATMOSPHERE ARGON GROUP

CARBON DIOXIDE AMOUNT IN AIR SOURCES OF PROPERTIES OF COURSE IN BLOOD

OZONE NOT CONSTANT ELEMENT WHERE FOUND HOW FORMED

AMMONIA HOW PRODUCED WHERE FOUND

OTHER CONSTITUENTS HYDROGEN PEROXIDE HELIUM KRYPTON NEON XENON NITROGEN AND SULPHURIC ACID

AIR PRESSURE

NORMAL AIR PRESSURE AVERAGE PRESSURE INTELLECTUAL ADAPTATION

REDUCED AIR PRESSURE INCREASED RATE OF BREATHING EXPERIMENT SYMPTOMS IN REDUCED AIR PRESSURE

INCREASED AIR PRESSURE CONDITIONS IN SAME DANGER FROM

CAISSON DIS-EASE SEVERE PAIN IN MUSCLES AND JOINTS DIVER’S PALSY BENDS

HUMIDITY AND TEMPERATURE OF AIR

HUMIDITY RELATIVE ABSOLUTE

COLD DRY AIR ADAPTING BODY TO CHANGE HEAT STROKE HEAT EVAPORATION NECESSARY

WARM MOIST AIR INTERFERENCE IN ADAPTATION EFFECTS UPON BODY

COLD DAMP AIR PRODUCES CHILLING OF BODY INTERFERES WITH INTELLECTUAL ADAPTATION

WARM DRY AIR VERY DESIRABLE LOSS OF MOISTURE FROM BODY

PROPER TEMPERATURE AND HUMIDITY