Science among the Swains.

If there were any truth in Spirit Rapping, we should be glad if the ghost of any good old British farmer would be so kind as to rap out its ideas on the subject of an agricultural implement, for which a prize has been awarded by the Royal Agricultural Society, and which rejoices in the name of a Dynamometer. Respecting this new-fangled invention, however, it would not, perhaps, be correct to print all the expressions which the worthy but possibly rather prejudiced spirit might "rap out."