86 LICE AND THEIR MENACE TO MAN 



fere in no way with their roaming. They were 

 also asked to note when and where they were 

 bitten. At the end of each experiment all the 

 bedding was passed through a disinfestor. 



Every two hours the temperatures of both 

 men were taken and notes were made as to the 

 condition of their skins, whether moist or dry. 

 Sometimes a brief observation was made on the 

 scattering of the lice at the time of the visits, 

 and the men were questioned as to the biting. 

 The experiments were allowed to proceed for 

 varying periods, generally about sixteen hours, 

 and the lice were then again collected and their 

 distribution on the men and blankets noted under 

 the following headings : (1) outside of top 

 blanket; (2) top, or third, blanket interspace; 

 (3) second blanket interspace ; (4) first blanket 

 interspace ; (5) blanket above men, under side, 

 those above each man being recorded separately ; 

 (6) blanket below men, upper side, the lice below 

 each man being recorded separately ; (7) pillows 

 of each ; (8) mattresses, also for each man ; (9) 

 outside pyjama jacket of each ; (10) inside pyjama 

 jacket of each; (11) outside pyjama trousers of 

 each; (12) inside pyjama trousers of each; (13) 

 on the person ; and (14) the missing lice which 

 presumably had wandered right away from the 

 bed and had probably crept into the cracks 

 between the boards of the floors. It was found 

 necessary in each case to rip along the tape holes 

 of the pyjama trousers and to open any seams 



