Book contents
- Frontmatter
- PREFACE
- Contents
- NAUTICAL
- WAR AND HUNTING
- ARCHITECTURE
- TOOLS
- OPTICS
- USEFUL ARTS
- CHAPTER I PRIMITIVE MAN AND HIS NEEDS.—EARTHENWARE.—BALL-AND-SOCKET JOINT.—TOGGLE OR KNEE JOINT
- CHAPTER II CRUSHING INSTRUMENTS.—THE NUT-CRACKERS, ROLLING-MILL, AND GRINDSTONE.—PRESSURE OF ATMOSPHERE.—SEED DIBBLES AND DRILLS
- CHAPTER III CLOTH-DRESSING.—BRUSHES AND COMBS.—BUTTONS, HOOKS AND EYES, AND CLASP
- CHAPTER IV THE STOPPER, OR CORK.—THE FILTER
- CHAPTER V THE PRINCIPLE OF THE SPRING.—THE ELASTIC SPRING.—ACCUMULATORS.—THE SPIRAL SPRING
- CHAPTER VI SPIRAL AND RINGED TISSUES.—VARIOUS SPRINGS IN NATURE AND ART
- CHAPTER VII FOOD AND COMFORT
- CHAPTER VIII DOMESTIC COMFORT
- CHAPTER IX ARTIFICIAL WARMTH.—RING AND STAPLE.—THE FAN
- CHAPTER X WATER, AND MEANS OF PROCURING IT
- CHAPTER XI AËROSTATICS.—WEIGHT OF AIR.—EXPANSION BY HEAT
- CHAPTER XII
- CHAPTER XIII TELESCOPIC TUBES.—DIRECT ACTION.—DISTRIBUTION OF WEIGHT.—TREE-CLIMBING.—THE WHEEL
- CHAPTER XIV
- CHAPTER XV
- CHAPTER XVI TILLAGE.—DRAINAGE.—SPIRAL PRINCIPLE.—CENTRI-FUGAL FORCE
- CHAPTER XVII OSCILLATION.—UNITED STRENGTH.—THE DOME
- ACOUSTICS
- INDEX
CHAPTER IX - ARTIFICIAL WARMTH.—RING AND STAPLE.—THE FAN
Published online by Cambridge University Press: 29 August 2010
- Frontmatter
- PREFACE
- Contents
- NAUTICAL
- WAR AND HUNTING
- ARCHITECTURE
- TOOLS
- OPTICS
- USEFUL ARTS
- CHAPTER I PRIMITIVE MAN AND HIS NEEDS.—EARTHENWARE.—BALL-AND-SOCKET JOINT.—TOGGLE OR KNEE JOINT
- CHAPTER II CRUSHING INSTRUMENTS.—THE NUT-CRACKERS, ROLLING-MILL, AND GRINDSTONE.—PRESSURE OF ATMOSPHERE.—SEED DIBBLES AND DRILLS
- CHAPTER III CLOTH-DRESSING.—BRUSHES AND COMBS.—BUTTONS, HOOKS AND EYES, AND CLASP
- CHAPTER IV THE STOPPER, OR CORK.—THE FILTER
- CHAPTER V THE PRINCIPLE OF THE SPRING.—THE ELASTIC SPRING.—ACCUMULATORS.—THE SPIRAL SPRING
- CHAPTER VI SPIRAL AND RINGED TISSUES.—VARIOUS SPRINGS IN NATURE AND ART
- CHAPTER VII FOOD AND COMFORT
- CHAPTER VIII DOMESTIC COMFORT
- CHAPTER IX ARTIFICIAL WARMTH.—RING AND STAPLE.—THE FAN
- CHAPTER X WATER, AND MEANS OF PROCURING IT
- CHAPTER XI AËROSTATICS.—WEIGHT OF AIR.—EXPANSION BY HEAT
- CHAPTER XII
- CHAPTER XIII TELESCOPIC TUBES.—DIRECT ACTION.—DISTRIBUTION OF WEIGHT.—TREE-CLIMBING.—THE WHEEL
- CHAPTER XIV
- CHAPTER XV
- CHAPTER XVI TILLAGE.—DRAINAGE.—SPIRAL PRINCIPLE.—CENTRI-FUGAL FORCE
- CHAPTER XVII OSCILLATION.—UNITED STRENGTH.—THE DOME
- ACOUSTICS
- INDEX
Summary
ARTIFICIAL WARMTH
PASSING from the direct to the indirect comforts of a house-hold, we will take Artificial Warmth.
The savage, as a matter of necessity, makes a fire in the middle of his hut, and lets the smoke have its own way. Sometimes, as is the case with the North American Indians, the top of the conical hut is open, and the whole edifice is a single chimney of large dimensions, something like the “chimney-corner” of past days, which only survives in such places as the New Forest.
Then there are the various Kafir tribes of Southern Africa. They have no aperture in their huts except the tiny doorway, which can only be entered on hands and knees. But they must have their fire. No argument can persuade them that they had better make their fire and cook their food outside the hut. So the wood-smoke fills the hut, coats it with a lining of soot, and gets out as it can through the sticks and withes of which the simple edifice is built.
As a contrast, we have the oil-lamp of Esquimaux-land, where there is no provision for ventilation, where the snow-houses are tightly closed and crammed with inhabitants, and where no one seems to need fresh air.
The next step in civilisation is to construct a tube for the purpose of carrying off the smoke, such as we know by the name of chimney or flue, and to place the fire within it.
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- Nature's TeachingsHuman Invention Anticipated by Nature, pp. 412 - 421Publisher: Cambridge University PressPrint publication year: 2009First published in: 1877