Dog Days. These days commence on the 3rd of July, and end on the 11th of August. Dr. Hutton says, that common opinion has been accustomed to regard the rising and setting of Sirius, or the " dog-star," with the sun, as the cause of excessive heat, and of consequent calamities, instead of its being viewed as the sign when such effects might be expected. The star not only varies in its risings in every one year as the latitude varies, but is always later every succeeding year in all latitudes; so that in time the star may, by the same rule, come to be charged with bringing frost and snow."