502 



THE AM ERIC AX XATUHALIST 



into the ground, so that it could not l)e said with ee 

 even the undergrourul burrows were those of the shrew 

 I have found underground nests used by ^Microtus, no 

 ing the emphasis which Rhoads (1903, p. 100) places o 

 nient that the nests of this species are built ''(it fhr su,-/ 

 position of any nests that might be found could not tli 

 as a safe criterion. Some of the burrows iuid h-. ai» of 



Microtus never ii-^e<l >iiails for t'ood. '\\> deteiiiiine 

 two meadow volo weiv coiiliiied in iron ca-e^ in ihe 

 Each was given a vessel of water, and ('(pial cai'c \\a- la 

 each cage clean and dry. One Microtus \\a> ui\en 



