To show the _Clarion_ that we are not "bluffing," and that we are perfectly willing to demonstrate practically any position we ever take, we herewith accept its challenge.  Even now we have in process of construction a new type of airplane, by means of which we are confident we can fly approximately straight around the belly of this old world entirely by air.  A little later we shall announce a time, place, and route, in our columns, and sincerely trust the _Clarion_ will be satisfied with them.