>I have been conducting a micrometeorite gathering program off and on since >last March. My technique has been to set a well slide outside for a 24 hour >period and then counting the spherical objects present. Early on I was What is a well slide and where can you buy them?? Sincerely, Dr. Louis S. Binder, O.D. -FBAC & HAS Member Clear Skies 2nd Star to the Right and straight on till morning