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(2) all guard well your health and we will hope to have you at school before you are much older. I am glad to find you have not forgotten my questions. What is that hard one? Sarah is but half right about the wind. The land heats or warms quickest in the morning and then the cold air from the water causes a wind towards the land; at noon the water and land being one as warm as the other, there is no wind; but at night the land cools fastest and then the cold air rushes from the land to the warm air over the water and the wind is just opposite to what it is after the sun is up in he morning. If there is any question you would like it ask about it, just put it in your next letter; and now I would like to have you by some evening where the kitch- en or parlor is warm; open the entry door, and place a lighted candle first at the bottom and then at the top and notice the direction of the flame. If you can, I would like to have you tell me which is the warm and which the cold wind. I ought to have told you that the mud here is not brown like what