COMMON COMMUNICABLE DISEASES. 



bacillus typhosus, and the patient frequently 

 suffers from thirst. 



A disordered condition of the nervous system j^^ Nervous 

 exists, manifested by headache, insomnia, and System, 

 in severe cases by delirium, unconsciousness 

 and other very grave symptoms, described by 

 authorities as "the typhoid state." 



The digestive system is affected and in con- -pjj^ Digestive 

 sequence we observe loss of appetite, a furred System, 

 tongue and sometimes nausea and vomiting. 

 At times there is a severe diarrhoea present, at 

 other times constipation may exist. 



There are disturbances, too, of the circula- 

 tory and respiratory systems. The heart beats The Circula- 

 more rapidly and there is a corresponding in- R^^^tory 

 crease in the pulse rate. There are character- Systems, 

 istic changes in the respiration, also, very often. 



Changes in the skin are apparent, and it is xhe Skin, 

 usually found to be hot and dry during the 

 height of the fever. 



The changes in the muscular system are 

 shown by their thin, flabby condition, which is lysu^^*^"'^"^ 

 especially noticeable if the disease runs a pro- 

 longed course. 



Changes are observed in the urine owing to 

 an increase of the solids contained therein. It The Urine, 

 is highly colored and diminished in quantity 

 usually. 



The germs of typhoid fever are thrown off Excretion of 

 in the evacuations from the bowels, in the urine, ^'^''ms. 

 71 



