PALL AND EMILY \\'IN'n<;ii 



91 



III many ccliavs, ]iei-haps sufficient voiitilation is afforded 

 thi'ough crevices swept hy tlie wind or through the opening and 



Fig. 37. One of the France beo-cellars in Wisconsin. 



closing of entraLces into the cellar. More ventilation, as stated 

 above, will be necessary when the temperature becomes lower, 

 requiring activity on the part of the Ijees. It is well to arrange 

 a ventilator for the cellar but this need not be over 6x6 inches 

 and should be shielded at the top to avoid light in the repository. 

 H. H. Selwyn of Ontario has had good success with such a venti- 

 lator. He has, in addition, a sub-ventilator comii.g through the 

 floor. This pipe extends from the intake for sixty feet under 

 ground before reaching the cellar. In this way the air is tempered. 

 No doubt also that this constant stream of earth- tempered air 

 has its effect in maintaining the temperature of the cellar at the 

 same degree, thus combining the desirabilities of temperatui-e and 



