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THE AMERICAN NATURALIST [Vol. XLIII 



of the toads until the twenty-eighth of March, when A 

 was dug up, and eleven days later cage C. Fourteen 

 were found in A, of which only three were alive. The 

 depths at which they were found varied from one to 

 twenty-four and a half inches. All above sixteen inches 

 (the depth to which the ground was frozen) were dead. 

 In C thirteen were found, of which nine were alive. 

 There had been a trench dug near one end of the cage 

 in the fall and the earth in this end was frozen to a depth 

 of twelve inches. Two toads near the surface and two 

 in the frozen end, one at a depth of twelve inches, were 

 dead. Those alive were down below the frost line, which 

 in this place was between eight and nine inches. 



The accompanying table shows the weight of each 

 live toad at the time it was put out and when dug up, 

 also the depth at which it was found. 



B was not disturbed, and the first toad to appear was 

 no. 1 on the thirtieth of April, and the second and last 

 was no. 7 on the twenty-eighth of May. 



