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I had, however, a mouth-speculum which also acted as a gag, and, having propped the patient's mouth open with this, I hastily slipped off one of the rubber tubes from my stethoscope and inserted into one end of it a vulcanite ear-speculum to serve as a funnel.
The Unconscious is the storehouse of memory, where every impression we receive from earliest infancy to the last hour of life is recorded with the minutest accuracy. These memories, however, are not inert and quiescent, like the marks on the vulcanite records of a gramophone; they are vitally active, each one forming a thread in the texture of our personality.
The "regular thing" was a low, four-wheeled pony-chaise of basket-work, drawn by two jolly little fat ponies, black and shiny as vulcanite, which jogged rapidly in, just far enough behind the stage to avoid its dust. This vehicle was driven by a young lady of decided beauty, with a spice of Amazonian spirit.
With a thin disc of vulcanite as receiver, the dark heat rays which pass through an opaque screen were found to yield a note. Even the outer ear is itself a receiver, for when the intermittent beam is focussed in the cavity a faint musical tone is heard.
Henckel's back over the hatch-coaming, took his automatic away from him, and proceeded to take a cast of the mate's features in the vulcanite butt of the weapon. And vulcanite is far from soft! When Terence Reardon had completed his self-appointed task he stood up, hitched his dungarees, spat blood on the deck, and stood waving from side to side like a dancing bear.
He nodded aft at a web of wire-coils, vulcanite levers and brass keys, standing beneath a wooden shelter in the stern. Three or four officers from the Fleet were gathered round it with note-books in their hands testing and adjusting amid its intricacies. "I've been lookin' at it," admitted the big man non-committally. "It sounds like a cinch, but I understand it ain't perfect yet?"
Now the gum is imported in masses, to be wrought over by our skillful mechanics." The children were very much pleased to find that they had learned the nature of three important articles India-rubber, gutta-percha and vulcanite and they thought it would be quite easy to remember the differences between them.
The substance on whose expansion the working of the instrument depends is a strip of some material extremely sensitive to heat, such as vulcanite. shown at A, and firmly clamped at B. Its lower end fits into a slot in a metal plate, C, which in turn rests upon a carbon button.
Sending for his finger-print apparatus, he carefully powdered the vulcanite mouthpiece, and he could scarcely suppress a cry of satisfaction when he saw shaping themselves before his eyes three of the clearest prints he had ever had the good fortune to come across. On one side of the mouthpiece was the mark of a right thumb, and on the other those of a first and second finger.
The sensitiveness of the instrument may be easily comprehended when it is stated that the heat of the hand thirty feet away from the cone-like funnel of the tasimeter will so affect the galvanometer as to cause the spot of light to leave the scale. This instrument can also be used to indicate minute changes of moisture in the air by substituting a strip of gelatine in place of the vulcanite.
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