Show tired feeling follows long automobile drive after driving a car miles or more in a day vint tired feeling does not come from a very marked muscular fatigue but Is rather the result of nerys nerve fatigue reports thel the touring tou ring bureau odthe of the chicago motor club the state statement mient Is bused based on the results of tests recently made upon tea ten persons who had driven miles the tests comprised determination 0 of the carbon dioxide combining power of the blood Inn inasmuch as the presence e a co of carbonic acid in the system Is a leading product of fatigue and a blood count the tha latter was taken to determine the lite number of white cells in the blood them the white corpuscles corpus cles multiply when poison contaminates the BI system stem and are extremely active in eliminating it the tests revealed ani an overage average decrease crea se in carbon dioxide combining power of 15 per cent and a 25 per cent increase in average white cell count these results clearly indicate nerve fatigue rather than muscular exhaustion A large part of this enervation can be averted the touring bureau declared by starting the tour in good physical condition |