The retreat of the Wisconsin glacier

Today the last snowdrift has finally disappeared from the tree line of our neighboring field.  Probably the result of yesterday's steady, cold rain, some of which is standing in our basement now. Puts me in mind of the argument between Louis Agassiz and the biblicists about whether erratic boulders were left by glaciers or Noah's flood.  It's all water. E. C. Pielou tells us that glaciers are the result of cold summers, not snowy winters. That's a good thing; I was getting worried. Of course, now they're predicting snow for tonight so we can never be sure.