For instance, medical boards survey medical institutions.

Their sole concern is whether those institutions are well found and efficient.[1] But when a missionary surveys a missionary hospital (if the principle which we propound is accepted), he surveys it not _qua_ medical establishment but _qua_ missionary utensil.

The object is not to find out the medical efficiency of the hospital, but its missionary effectiveness.

It may be answered that a medically inefficient hospital cannot be truly effective from a missionary point of view.

That may be true; but it is not certainly true.