Word: saliva
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...Literally named, the spitball has saliva applied on one side. The difference in atmospheric friction on the wet and dry sides gives the ball a queer twist or "break...
...dimly the picture the press had given them then of an enraged Brünhilde storming across the stage, hurling invectives at two of her colleagues chatting and chortling as they awaited their cues in the wings; of that same vicious Valkyrie going at them finally, gathering a maximum of saliva and spitting it. But the enraged Olszewska missed the hated Jeritza and her spittle landed upon a Madame Kittle. The inaccurate spitter was temporarily expelled from Vienna's opera...
...reason why quinine is important is that it is a specific against malaria. It is useful also as a tonic, its bitterness causing the secretion of saliva and gastric juices. When quinine gets into the blood it causes beneficent sweating. It is a bactericide also, slightly stronger than the same strength of carbolic acid, yet not exceptionally powerful. Bacteria are low-grade vegetable organisms. The thing which causes malaria is animal?plasmodium malariae?introduced into the human blood stream by a breed of mosquito. Quinine in the blood kills the plasmodium in the blood...
...unconditioned reflex is the simplest nervous reaction. A dog will smell food and turn in its direction. Nature believes in preparedness and the dog will secrete saliva as he goes for the food. Only the lower parts of the brain are concerned in this reaction. But, if a bell is rung every time the food appears, there will come a time when the dog will secrete saliva at the sound of the bell when there is no food in sight...
...dogs could be taught to discriminate between a metronome beating 68 beats per minute to one having a rate of 200. Food appeared with the 200 rate, nothing happened at 68. After the dog had been conditioned the metronome was placed near him and started at 200. Immediately saliva dripped into the little tube connected with his salivary gland. The metronome slowed to 68. The dog was no longer interested. Two hundred again and the flow of saliva recommenced...