"The primary cause of the fever phenomena is still a mooted (discussed and debated) question, and is either a disorder of the sympathetic nervous system giving rise to disturbances of the vaso-motor filaments, or a derangement of the nerve centers located adjacent to the corpus striatum, which have been found, by experiment, to govern the processes of heat production, distribution, and dissipation. "Rise of temperature is the pre-eminent feature of all fevers, and can only be positively determined by the use of the clinical thermometer. The term feverishness is used when the temperature ranges from 99° to 100° fahr.; slight fever if 100° or 101°; moderate, 102° or 103°; high if 104° or 105° and intense if it exceed the latter. The term hyperpyrexia is used when the temperature shows a tendency to remain at 106° fahr. and above. "Quickened circulation is the rule in fevers, the frequency usually maintaining a fair ratio with the increase of the temperature. A rise of one degree fahr. is usually attended with an increase of eight to ten beats of the pulse per minute. "The following table gives a fair comparison between temperature and pulse:-- TABLE OF DEGREES. A temperature of 98° corresponds to a pulse of 60° " 99° " " " 70° " 100°F " " " 80° " 101°F " " " 90° " 102°F " " " 100° " 103°F " " " 110° " 104°F " " " 120° " 105°F " " " 130° " 106°F " " " 140° "The tissue waste is marked in proportion to the severity and duration of the febrile phenomena, being slight or (nil) in febricula, and excessive in typhoid fever. "The disordered secretions are manifested by the deficiency in the salivary, gastric, intestinal, and nephritic secretions, the tongue being furred, the mouth clammy, and there occurring anorexia, thirst, constipation, and scanty, high-colored acid urine."[6] [Footnote 6: What has the student gained by reading the above definition of this standard author and representative of present medical attainment but a labored effort to explain what he does not know.] FEVERS ONLY EFFECTS. Fevers are effects only. The cause may be far from mental conclusions. If we have a house with one bell, and ten wires each fastened to a door running to the center, all having wire connection and so arranged that to pull any one wire will set the bell in motion, and without an indicator you cannot tell which wire is disturbed, producing the effect or ringing of the bell at the center. An electrician would know at once the cause, but to discriminate and locate the wire disturbed is the study.