4 6 



F. G. HALL. 



24.2 per cent, of its body weight, or about 34 per cent, of the 

 water contained in its body was given up, without loss of vitality. 

 (2) The wood mouse was exsiccated to 30.7 per cent, of its body 



TABLE X. 



MEADOW MOUSE, Microtus pennsylvanicus (Ord.)- 



TABLE XI. 



HOUSE MOUSE, Mus musculus Linn. 



i These mice were dead when removed and the weight recorded is the last 

 weight made before they died. As the exact time of death was not known, 

 no weights of the dead mice were taken. The last weight was taken in each 

 case from 12 to 24 hours before death. 



