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If the angels ever look out of their sphere of intense spiritual realities to indulge in a laugh, methinks such a lonely tripod-sitter, cased over with his invulnerable, non-conducting cloak and hood, shrinking, dodging, or bracing himself up on the defensive, as the crowd fans him with its rush or jostles up against him, like the man who fancied himself a teapot, and was forever warning people not to come too near him, might furnish a subject for a planetary joke not unworthy of translation into the language of our dim earth.
None is known to science, though it seems to be known to Fijians, Tongans, Klings, and Bulgarians, who walk through fire unhurt. But it is necessary to believe this distinguished authority's statement about his ignorance of 'some non-conducting substance: 'Schoolboys' books and mediaeval tales describe how this can be done with alum and other ingredients.
I nodded, and he handed to me a felt-covered flask of the non-conducting kind, filled with boiling water, a tin of preserved milk, and a little bottle of meat extract of a most concentrated sort. Then, having lit two of the hurricane lamps and seen that they were full of oil, we started back up the cave.
With the electric motion, however, all this is changed, and the electric attachments are not of necessity so fragile as to be un-mechanical or to be not practical. The advantage has also been taken, in a mechanical way, of using cotton as one element, and, being non-conducting, so that no trouble shall arise from contact with the working parts of the electrical apparatus with the cotton itself.
The chain of descent is linked after such a complicated pattern, that the non-conducting condition of one link, or of many links even, cannot break the transmission of qualities. I may inherit from my great-great-grandfather or mother, or some one ever so much farther back.
The construction of the oil cup and tee piece is shown in the detail at the left where A is the steel tee piece, into which is screwed the brass thermometer cup B. The hollow bottom portion of this cup is less than 1/16 of an inch in thickness. The top portion of the bored hole is enlarged as shown, and into this, around the thermometer, is placed a non-conducting material.
This itself stimulates every function, and all the work of the body goes on more energetically. Then the heat produced is conducted off far less rapidly than in aquatic forms. Water is a good conductor of heat, and nearly all aquatic animals are cold-blooded. The few which are warm-blooded are protected by a thick layer of non-conducting fat.
The fish may with impunity be touched with a key, or any other metallic instrument; no shock is felt when a conducting or non-conducting body is interposed between the finger and the electrical organ of the torpedo. This circumstance proves a great difference between the torpedo and the gymnotus, the latter giving his strokes through an iron rod several feet long.
The solution of the practical problem which has to be faced seems to depend upon the prospect of effecting a compromise between the two systems, introducing thin resisting wire as the metallic element in such work, but making all other components from non-conducting material.
The uses of snow, from its non-conducting qualities, whether as appreciated by the Esquimaux as a material for huts, or by the agriculturists of our own climate as sheltering the seed, are too well known to require any particular remarks. Strange as it may appear, the proximate cause of the formation of snow is not yet fully agreed upon by the learned.
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